The Gateway space station hosts the Orion spacecraft in a polar orbit around the Moon, supporting scientific discovery on the lunar surface during the Artemis IV mission.

The Gateway space station hosts the Orion spacecraft in a polar orbit around the Moon, supporting scientific discovery on the lunar surface during the Artemis IV mission.

The Orion spacecraft for NASA’s crewed Artemis II (right), Artemis III (left), and Artemis IV (center) missions are stationed next to each other inside the high bay of the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on June 22, 2023. Each capsule is in a different stage of production as technicians and engineers prepare the spacecraft to carry astronauts to and around the Moon on their upcoming flights.

The Artemis IV Orion crew module in work inside the Operations and Checkout Building at NASA's Kennedy Space Center in Florida on March 5, 2025.

Technicians lift the engine section for NASA’s Artemis IV SLS (Space Launch System) rocket ahead of further processing inside the high bay of the Space Systems Processing Facility at the agency's Kennedy Space Center in Florida on Monday, Oct. 21, 2024. The engine section is one of five major elements that makes up the SLS rocket’s 212-foot-tall core stage, which house the rocket’s four RS-25 engines and vital systems for mounting, controlling, and delivering fuel from the stage’s two massive liquid propellant tanks to the engines.

Technicians lift the engine section for NASA’s Artemis IV SLS (Space Launch System) rocket ahead of further processing inside the high bay of the Space Systems Processing Facility at the agency's Kennedy Space Center in Florida on Monday, Oct. 21, 2024. The engine section is one of five major elements that makes up the SLS rocket’s 212-foot-tall core stage, which house the rocket’s four RS-25 engines and vital systems for mounting, controlling, and delivering fuel from the stage’s two massive liquid propellant tanks to the engines.

Technicians at NASA’s Michoud Assembly Facility prepare to move the engine section of NASA’s Space Launch System rocket for Artemis IV to the Vertical Assembly Building for the next step in production. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Thursday, May 12, 2022. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility prepare to move the engine section of NASA’s Space Launch System rocket for Artemis IV to the Vertical Assembly Building for the next step in production. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Thursday, May 12, 2022. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility prepare to move the engine section of NASA’s Space Launch System rocket for Artemis IV to the Vertical Assembly Building for the next step in production. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Thursday, May 12, 2022. Image credit: NASA/Michael DeMocker

Seen here is the pressure vessel for the Artemis IV mission inside the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on Feb. 21, 2023. The pressure vessel is the underlying structure of the Orion crew module, containing the pressurized atmosphere astronauts will breathe and work in while in the vacuum of deep space. Artemis IV will be the first operational mission to Gateway – an outpost in lunar orbit serving as a staging point for deep space exploration – followed by a week-long surface mission on the Moon. Using Gateway, NASA will develop a long-term presence on the Moon, using this as a steppingstone before venturing on to Mars.

Seen here is the pressure vessel for the Artemis IV mission inside the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on Feb. 21, 2023. The pressure vessel is the underlying structure of the Orion crew module, containing the pressurized atmosphere astronauts will breathe and work in while in the vacuum of deep space. Artemis IV will be the first operational mission to Gateway – an outpost in lunar orbit serving as a staging point for deep space exploration – followed by a week-long surface mission on the Moon. Using Gateway, NASA will develop a long-term presence on the Moon, using this as a steppingstone before venturing on to Mars.

NASA’s Artemis IV SLS (Space Launch System) core stage engine section which houses the four RS-25 engines, arrives at the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Sept. 9, 2024. NASA’s Pegasus barge delivered the core stage engine section, along with other hardware for future Artemis campaigns, from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024.

NASA’s Artemis IV SLS (Space Launch System) core stage engine section which houses the four RS-25 engines, arrives at the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Sept. 9, 2024. NASA’s Pegasus barge delivered the core stage engine section, along with other hardware for future Artemis campaigns, from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024.

NASA’s Artemis IV SLS (Space Launch System) core stage engine section which houses the four RS-25 engines, arrives at the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Sept. 9, 2024. NASA’s Pegasus barge delivered the core stage engine section, along with other hardware for future Artemis campaigns, from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024.

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Image credit: NASA/Michael DeMocker

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV out of Cell G after weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility move the engine section of NASA’s Space Launch System rocket for Artemis IV from the Vertical Assembly Building to Cell G for weld priming. This hardware is the first large piece manufactured for the Artemis IV mission and makes up the lowest portion of the 212-foot-tall core stage. When complete, the engine section will house the four RS-25 engines and include vital systems for mounting, controlling and delivering fuel from the propellant tanks to the rocket’s engines. Together with its four RS-25 engines and its twin solid rocket boosters, it will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability, and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans prepare the completed Orion pressure vessel for the Artemis IV mission for shipment to NASA’s Kennedy Space Center in Florida. The pressure vessel, which was assembled by lead contractor, Lockheed Martin, is the Orion crew module primary structure – the core upon which all other elements of Orion’s crew module are integrated. The structure is critical to Artemis crews as it holds the pressurized atmosphere astronauts breathe and work in a while in the vacuum of deep space. Once the module arrives at Kennedy’s Vehicle Assembly Building high bay, teams will begin integration of the pressure vessel with the Orion spacecraft crew module adapter and other assembly. With Artemis missions, NASA will land the first woman and the first person of color on the lunar surface, paving the way for human exploration of the Moon and on to Mars. Image credit: NASA/Michael DeMocker

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility. Image credit: NASA/Michael DeMocker

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility. Image credit: NASA/Michael DeMocker

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility. Image credit: NASA/Michael DeMocker

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility. Image credit: NASA/Michael DeMocker

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility. Image credit: NASA/Michael DeMocker

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility. Image credit: NASA/Michael DeMocker

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

Back shell panels are visible on the Orion spacecraft for the Artemis IV mission inside the Neil A. Armstrong Operations and Checkout Building high bay at NASA's Kennedy Space Center in Florida on Monday, Dec. 15, 2024. The back shell panels serve as the outer layer of the spacecraft and will protect it against the extreme temperatures of re-entry from deep space.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

Teams from NASA’s Exploration Ground Systems transport the engine section of the agency’s Artemis IV SLS (Space Launch System) core stage from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida to the spaceport’s Space Systems Processing Facility (SSPF) on Tuesday, Oct. 15, 2024. NASA’s Pegasus barge delivered the core stage engine section housing the four RS-25 engines from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024. The engine section is one the most complex and intricate parts of the rocket stage that will help power the Artemis missions to the Moon.

Teams from NASA’s Exploration Ground Systems transport the engine section of the agency’s Artemis IV SLS (Space Launch System) core stage from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida to the spaceport’s Space Systems Processing Facility (SSPF) on Tuesday, Oct. 15, 2024. NASA’s Pegasus barge delivered the core stage engine section housing the four RS-25 engines from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024. The engine section is one the most complex and intricate parts of the rocket stage that will help power the Artemis missions to the Moon.

Teams from NASA’s Exploration Ground Systems transport the engine section of the agency’s Artemis IV SLS (Space Launch System) core stage from the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida to the spaceport’s Space Systems Processing Facility (SSPF) on Tuesday, Oct. 15, 2024. NASA’s Pegasus barge delivered the core stage engine section housing the four RS-25 engines from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024. The engine section is one the most complex and intricate parts of the rocket stage that will help power the Artemis missions to the Moon.

The engine section of NASA’s Artemis IV SLS (Space Launch System) core stage arrives at the Space Systems Processing Facility (SSPF) at NASA’s Kennedy Space Center in Florida on Tuesday, Oct. 15, 2024, after being transported from the spaceport’s Vehicle Assembly Building. NASA’s Pegasus barge delivered the core stage engine section housing the four RS-25 engines from NASA’s Michoud Assembly Facility in New Orleans, Louisiana to NASA Kennedy on Thursday, Sept. 5, 2024. The engine section is one the most complex and intricate parts of the rocket stage that will help power the Artemis missions to the Moon.

Crews at NASA’s Michoud Assembly Facility in New Orleans load alluminum alloy panels into the Vertical Weld Center June 1. The Vertical Weld Center is a friction-stir weld tool for the large structures of the core stage for the SLS (Space Launch System) rocket. Teams load the panels into the VWC using an overhead crane system, then multiple panels are welded together to create entire barrels. The panels in these images are some of the five barrels that will form the SLS liquid hydrogen propellant tank for the SLS rocket that will power NASA’s Artemis IV mission, which is also the first flight of SLS in its more powerful Block 1B configuration. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid hydrogen propellant tank holds 537,000 gallons of liquid hydrogen cooled to minus 432 degrees Fahrenheit and sits between the core stage’s intertank and engine section. The liquid hydrogen hardware, along with the liquid oxygen tank, provides propellant to the four RS-25 engines at the bottom of the core stage to produce more than two million pounds of thrust to help launch the Artemis IV mission to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Crews at NASA’s Michoud Assembly Facility in New Orleans load alluminum alloy panels into the Vertical Weld Center June 1. The Vertical Weld Center is a friction-stir weld tool for the large structures of the core stage for the SLS (Space Launch System) rocket. Teams load the panels into the VWC using an overhead crane system, then multiple panels are welded together to create entire barrels. The panels in these images are some of the five barrels that will form the SLS liquid hydrogen propellant tank for the SLS rocket that will power NASA’s Artemis IV mission, which is also the first flight of SLS in its more powerful Block 1B configuration. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid hydrogen propellant tank holds 537,000 gallons of liquid hydrogen cooled to minus 432 degrees Fahrenheit and sits between the core stage’s intertank and engine section. The liquid hydrogen hardware, along with the liquid oxygen tank, provides propellant to the four RS-25 engines at the bottom of the core stage to produce more than two million pounds of thrust to help launch the Artemis IV mission to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Crews at NASA’s Michoud Assembly Facility in New Orleans load alluminum alloy panels into the Vertical Weld Center June 1. The Vertical Weld Center is a friction-stir weld tool for the large structures of the core stage for the SLS (Space Launch System) rocket. Teams load the panels into the VWC using an overhead crane system, then multiple panels are welded together to create entire barrels. The panels in these images are some of the five barrels that will form the SLS liquid hydrogen propellant tank for the SLS rocket that will power NASA’s Artemis IV mission, which is also the first flight of SLS in its more powerful Block 1B configuration. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid hydrogen propellant tank holds 537,000 gallons of liquid hydrogen cooled to minus 432 degrees Fahrenheit and sits between the core stage’s intertank and engine section. The liquid hydrogen hardware, along with the liquid oxygen tank, provides propellant to the four RS-25 engines at the bottom of the core stage to produce more than two million pounds of thrust to help launch the Artemis IV mission to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Crews at NASA’s Michoud Assembly Facility in New Orleans load alluminum alloy panels into the Vertical Weld Center June 1. The Vertical Weld Center is a friction-stir weld tool for the large structures of the core stage for the SLS (Space Launch System) rocket. Teams load the panels into the VWC using an overhead crane system, then multiple panels are welded together to create entire barrels. The panels in these images are some of the five barrels that will form the SLS liquid hydrogen propellant tank for the SLS rocket that will power NASA’s Artemis IV mission, which is also the first flight of SLS in its more powerful Block 1B configuration. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid hydrogen propellant tank holds 537,000 gallons of liquid hydrogen cooled to minus 432 degrees Fahrenheit and sits between the core stage’s intertank and engine section. The liquid hydrogen hardware, along with the liquid oxygen tank, provides propellant to the four RS-25 engines at the bottom of the core stage to produce more than two million pounds of thrust to help launch the Artemis IV mission to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

The heat shield carrier for Orion’s Artemis IV mission is in view secured on a work stand in the Neil A. Armstrong Operations and Checkout Building high bay at NASA’s Kennedy Space Center in Florida on Monday, Dec. 15, 2024. The carrier structure holds the thermal protection system heat shield securely to the Orion crew module while facing launch, reentry, and splashdown impact loads.

The heat shield carrier for Orion’s Artemis IV mission is in view secured on a work stand in the Neil A. Armstrong Operations and Checkout Building high bay at NASA’s Kennedy Space Center in Florida on Monday, Dec. 15, 2024. The carrier structure holds the thermal protection system heat shield securely to the Orion crew module while facing launch, reentry, and splashdown impact loads.

Crews at NASA’s Michoud Assembly Facility in New Orleans lift the forward skirt of a core stage that will power NASA’s Space Launch System (SLS) rocket out of the Vertical Weld Center Sept. 16, 2022. The forward skirt will be used for NASA’s Artemis IV mission. The hardware houses flight computers, cameras, and avionics systems for the SLS rocket. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. When fully stacked, the forward skirt is located at the top of the 212-foot-tall core stage and connects to the upper part of the rocket. The core stage and its four RS-25 engines provide more than 2 million pounds of thrust to help power NASA’s next-generation lunar missions. Image credit: NASA/Michael DeMocker

Crews at NASA’s Michoud Assembly Facility in New Orleans lift the forward skirt of a core stage that will power NASA’s Space Launch System (SLS) rocket out of the Vertical Weld Center Sept. 16, 2022. The forward skirt will be used for NASA’s Artemis IV mission. The hardware houses flight computers, cameras, and avionics systems for the SLS rocket. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. When fully stacked, the forward skirt is located at the top of the 212-foot-tall core stage and connects to the upper part of the rocket. The core stage and its four RS-25 engines provide more than 2 million pounds of thrust to help power NASA’s next-generation lunar missions. Image credit: NASA/Michael DeMocker

Crews at NASA’s Michoud Assembly Facility in New Orleans lift the forward skirt of a core stage that will power NASA’s Space Launch System (SLS) rocket out of the Vertical Weld Center Sept. 16, 2022. The forward skirt will be used for NASA’s Artemis IV mission. The hardware houses flight computers, cameras, and avionics systems for the SLS rocket. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. When fully stacked, the forward skirt is located at the top of the 212-foot-tall core stage and connects to the upper part of the rocket. The core stage and its four RS-25 engines provide more than 2 million pounds of thrust to help power NASA’s next-generation lunar missions. Image credit: NASA/Michael DeMocker

Crews at NASA’s Michoud Assembly Facility in New Orleans lift the forward skirt of a core stage that will power NASA’s Space Launch System (SLS) rocket out of the Vertical Weld Center Sept. 16, 2022. The forward skirt will be used for NASA’s Artemis IV mission. The hardware houses flight computers, cameras, and avionics systems for the SLS rocket. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. When fully stacked, the forward skirt is located at the top of the 212-foot-tall core stage and connects to the upper part of the rocket. The core stage and its four RS-25 engines provide more than 2 million pounds of thrust to help power NASA’s next-generation lunar missions. Image credit: NASA/Michael DeMocker

This image shows teams at NASA’s Michoud Assembly Facility lifting a completed dome off of a robotic weld tool on Nov. 21. The dome, which will cap off the aft end of the liquid hydrogen tank, will be used on the core stage of the SLS (Space Launch System) rocket for the agency’s Artemis IV mission. Later, technicians from Boeing – NASA’s prime contractor for SLS – will join the aft dome with five barrels and a forward dome to complete the liquid hydrogen tank. Artemis IV is the first flight of SLS in its Block 1B configuration. The SLS core stage liquid hydrogen tank holds 537,000 gallons of super-cooled propellant and is one of five unique elements that make up the SLS core stage. Together with the forward skirt, liquid oxygen tank, intertank, and engine section, the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Image credit: NASA/Michael DeMocker

This image shows teams at NASA’s Michoud Assembly Facility lifting a completed dome off of a robotic weld tool on Nov. 21. The dome, which will cap off the aft end of the liquid hydrogen tank, will be used on the core stage of the SLS (Space Launch System) rocket for the agency’s Artemis IV mission. Later, technicians from Boeing – NASA’s prime contractor for SLS – will join the aft dome with five barrels and a forward dome to complete the liquid hydrogen tank. Artemis IV is the first flight of SLS in its Block 1B configuration. The SLS core stage liquid hydrogen tank holds 537,000 gallons of super-cooled propellant and is one of five unique elements that make up the SLS core stage. Together with the forward skirt, liquid oxygen tank, intertank, and engine section, the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Image credit: NASA/Michael DeMocker

Teams completed welding of the liquid oxygen dome for the core stage of a future SLS (Space Launch System) rocket at NASA’s Michoud Assembly Facility in New Orleans. The dome, which will cap off the forward end of the liquid oxygen tank, was lifted off of the robotic weld tool and moved to an assembly area for the next phase of production. Later, crews will add the forward dome to join the two barrels and the aft dome to complete the liquid oxygen tank. The flight hardware will be used for Artemis IV, the first flight of SLS in its Block 1B configuration. The SLS core stage liquid oxygen tank holds 196,000 gallons of super-cooled liquid propellant. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen and the liquid hydrogen tanks will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Image credit: NASA/Michael DeMocker

Teams completed welding of the liquid oxygen dome for the core stage of a future SLS (Space Launch System) rocket at NASA’s Michoud Assembly Facility in New Orleans. The dome, which will cap off the forward end of the liquid oxygen tank, was lifted off of the robotic weld tool and moved to an assembly area for the next phase of production. Later, crews will add the forward dome to join the two barrels and the aft dome to complete the liquid oxygen tank. The flight hardware will be used for Artemis IV, the first flight of SLS in its Block 1B configuration. The SLS core stage liquid oxygen tank holds 196,000 gallons of super-cooled liquid propellant. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen and the liquid hydrogen tanks will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Image credit: NASA/Michael DeMocker

Teams completed welding of the liquid oxygen dome for the core stage of a future SLS (Space Launch System) rocket at NASA’s Michoud Assembly Facility in New Orleans. The dome, which will cap off the forward end of the liquid oxygen tank, was lifted off of the robotic weld tool and moved to an assembly area for the next phase of production. Later, crews will add the forward dome to join the two barrels and the aft dome to complete the liquid oxygen tank. The flight hardware will be used for Artemis IV, the first flight of SLS in its Block 1B configuration. The SLS core stage liquid oxygen tank holds 196,000 gallons of super-cooled liquid propellant. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen and the liquid hydrogen tanks will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Image credit: NASA/Michael DeMocker

Teams completed welding of the liquid oxygen dome for the core stage of a future SLS (Space Launch System) rocket at NASA’s Michoud Assembly Facility in New Orleans. The dome, which will cap off the forward end of the liquid oxygen tank, was lifted off of the robotic weld tool and moved to an assembly area for the next phase of production. Later, crews will add the forward dome to join the two barrels and the aft dome to complete the liquid oxygen tank. The flight hardware will be used for Artemis IV, the first flight of SLS in its Block 1B configuration. The SLS core stage liquid oxygen tank holds 196,000 gallons of super-cooled liquid propellant. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen and the liquid hydrogen tanks will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Image credit: NASA/Michael DeMocker

Teams at NASA’s Michoud Assembly Facility in New Orleans move the forward skirt, which will be used on the SLS (Space Launch System) rocket’s core stage for the agency’s Artemis IV mission, into the vertical assembly center on Dec. 2. Inside the tooling, the forward skirt receives its forward and aft rings through a circumferential friction-stir welding process. Seven rings are used in the production of the core stage. They provide stiffening for the dome structures on the propellant tanks and, as on the forward skirt, serve as attachment points for the major components to form the SLS core stage. The forward skirt is one of five major elements that make up the 212-foot-tall rocket stage. The core stage, along with its four RS-25 engines, produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit and to the lunar surface for Artemis.

Teams at NASA’s Michoud Assembly Facility in New Orleans move the forward skirt, which will be used on the SLS (Space Launch System) rocket’s core stage for the agency’s Artemis IV mission, into the vertical assembly center on Dec. 2. Inside the tooling, the forward skirt receives its forward and aft rings through a circumferential friction-stir welding process. Seven rings are used in the production of the core stage. They provide stiffening for the dome structures on the propellant tanks and, as on the forward skirt, serve as attachment points for the major components to form the SLS core stage. The forward skirt is one of five major elements that make up the 212-foot-tall rocket stage. The core stage, along with its four RS-25 engines, produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit and to the lunar surface for Artemis.

Teams at NASA’s Michoud Assembly Facility in New Orleans move the forward skirt, which will be used on the SLS (Space Launch System) rocket’s core stage for the agency’s Artemis IV mission, into the vertical assembly center on Dec. 2. Inside the tooling, the forward skirt receives its forward and aft rings through a circumferential friction-stir welding process. Seven rings are used in the production of the core stage. They provide stiffening for the dome structures on the propellant tanks and, as on the forward skirt, serve as attachment points for the major components to form the SLS core stage. The forward skirt is one of five major elements that make up the 212-foot-tall rocket stage. The core stage, along with its four RS-25 engines, produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit and to the lunar surface for Artemis.

Teams at NASA’s Michoud Assembly Facility in New Orleans move the forward skirt, which will be used on the SLS (Space Launch System) rocket’s core stage for the agency’s Artemis IV mission, into the vertical assembly center on Dec. 2. Inside the tooling, the forward skirt receives its forward and aft rings through a circumferential friction-stir welding process. Seven rings are used in the production of the core stage. They provide stiffening for the dome structures on the propellant tanks and, as on the forward skirt, serve as attachment points for the major components to form the SLS core stage. The forward skirt is one of five major elements that make up the 212-foot-tall rocket stage. The core stage, along with its four RS-25 engines, produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit and to the lunar surface for Artemis.

NASA’s Pegasus barge, carrying several pieces of the agency’s Artemis campaign hardware, including Artemis II’s launch vehicle stage adapter, Artemis III’s core stage boat tail, and Artemis IV’s core stage engine section arrives at NASA’s Kennedy Space Center Complex 39 turn basin wharf in Florida on Thursday, Sept. 5, 2024.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

These photos and videos show teams at NASA’s Michoud Assembly Facility in New Orleans preparing, moving, and loading the engine section of a future SLS (Space Launch System) rocket to NASA’s Pegasus barge Aug. 28. The hardware will form the bottom-most section of the SLS core stage that will power NASA’s Artemis IV mission, which will be the first mission to the Gateway space station in lunar orbit under the Artemis campaign. The barge will transport the spaceflight hardware to NASA’s Kennedy Space Center in Florida via the agency’s Pegasus barge. Once in Florida, the engine section will undergo final outfitting inside Kennedy’s Space Station Processing Facility.

NASA’s Artemis II hardware, the launch vehicle stage adapter, awaits stacking operations at the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Sept. 9, 2024. The cone shaped launch vehicle stage adapter connects to NASA’s SLS (Space Launch System) rocket to the upper stage, the interim cryogenic propulsion stage, and protects the rocket’s flight computers, avionics, and electrical devices during launch and ascent.

NASA’s Artemis II hardware, the launch vehicle stage adapter, awaits stacking operations at the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Sept. 9, 2024. The cone shaped launch vehicle stage adapter connects to NASA’s SLS (Space Launch System) rocket to the upper stage, the interim cryogenic propulsion stage, and protects the rocket’s flight computers, avionics, and electrical devices during launch and ascent.

The European Service Module for the Artemis II mission is photographed inside the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on Feb. 21, 2023. Artemis II will be the first crewed flight test of the Space Launch System rocket and Orion spacecraft. The service module will provide the power necessary to propel Orion on a trip around the Moon, including the in-space maneuvering capability and other commodities necessary to sustain crew for the duration of the mission.

The European Service Module for the Artemis II mission is photographed inside the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on Feb. 21, 2023. Artemis II will be the first crewed flight test of the Space Launch System rocket and Orion spacecraft. The service module will provide the power necessary to propel Orion on a trip around the Moon, including the in-space maneuvering capability and other commodities necessary to sustain crew for the duration of the mission.

Shown inside the Neil Armstrong Operations and Checkout Building at NASA’s Kennedy Space Center in Florida on Aug. 8, 2023, is the Orion crew module for NASA’s Artemis IV mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Technicians at NASA’s Michoud Assembly Facility in New Orleans lift a ring for the Exploration Upper Stage (EUS) of the SLS (Space Launch System) rocket to move it to another location in the 43-acre factory for further inspection and production. Flight hardware of the SLS EUS, a more powerful in-space propulsion stage beginning with Artemis IV, is in early production at Michoud. The rings make up the barrel sections for the flight hardware. The Exploration Upper Stage will be used on the second configuration of the SLS rocket, known as Block 1B, and will provide in-space propulsion to send astronauts in NASA’s Orion spacecraft and heavy cargo on a precise trajectory to the Moon. EUS will replace the interim cryogenic propulsion stage for the Block 1 configuration of SLS. It has larger propellant tanks and four RL10 engines, enabling SLS to launch 40% more cargo to the Moon along with crew. NASA and Boeing, the SLS lead contractor for the core stage and EUS, are currently manufacturing stages for Artemis II, III, IV, and V at the factory. NASA is working to land the first woman and first person of color on the Moon under Artemis. SLS is part of NASA’s backbone for deep space exploration, along with Orion and the Gateway in orbit around the Moon. SLS is the only rocket that can send Orion, astronauts, and supplies to the Moon in a single mission.

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022. Image credit: NASA/Michael DeMocker

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022. Image credit: NASA/Michael DeMocker

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022. Image credit: NASA/Michael DeMocker

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022. Image credit: NASA/Michael DeMocker

These artist’s concepts show SpaceX’s Starship Human Landing System (HLS) in operation on its journey to the Moon. Before astronauts launch in NASA’s Orion spacecraft atop the agency’s SLS (Space Launch System) rocket, SpaceX will launch a storage depot to Earth orbit. For Artemis III and Artemis IV, SpaceX plans to complete propellant loading operations in Earth orbit to send a fully fueled Starship HLS to the Moon. Starship HLS will then dock directly to Orion so that two astronauts can transfer from the spacecraft to the lander to descend to the Moon’s surface, while two others remain in Orion. Beginning with Artemis IV, NASA’s Gateway lunar space station will serve as the crew transfer point. NASA is working with SpaceX to develop Starship HLS to carry astronauts from lunar orbit to the Moon’s surface and back for Artemis III and Artemis IV as part of the agency’s Artemis campaign.

These artist’s concepts show SpaceX’s Starship Human Landing System (HLS) in operation on its journey to the Moon. Before astronauts launch in NASA’s Orion spacecraft atop the agency’s SLS (Space Launch System) rocket, SpaceX will launch a storage depot to Earth orbit. For Artemis III and Artemis IV, SpaceX plans to complete propellant loading operations in Earth orbit to send a fully fueled Starship HLS to the Moon. Starship HLS will then dock directly to Orion so that two astronauts can transfer from the spacecraft to the lander to descend to the Moon’s surface, while two others remain in Orion. Beginning with Artemis IV, NASA’s Gateway lunar space station will serve as the crew transfer point. NASA is working with SpaceX to develop Starship HLS to carry astronauts from lunar orbit to the Moon’s surface and back for Artemis III and Artemis IV as part of the agency’s Artemis campaign.

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022

Move crews at NASA’s Michoud Assembly Facility lift the aft liquid oxygen tank (LOX) barrel out of the Vertical Weld Center (VWC) for its next phase of production. The aft barrel will eventually be mated with the forward barrel and the forward and aft domes to form the LOX tank, which will be used in the Space Launch System’s (SLS) Artemis IV mission. The LOX tank holds 196,000 gallons of super-cooled liquid oxygen to help fuel four RS-25 engines. The SLS core stage is made up of five unique elements: the forward skirt, liquid oxygen tank, intertank, liquid hydrogen tank, and the engine section. The liquid oxygen hardware, along with the liquid hydrogen tank will provide propellant to the four RS-25 engines to produce more than two million pounds of thrust to help launch NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon. Together with its four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts, and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit, the Human Landing System, and Orion spacecraft, is part of NASA’s backbone for deep space exploration and the Artemis lunar program. No other rocket is capable of carrying astronauts in Orion around the Moon in a single mission. Photographed on Tuesday, May 10, 2022

Teams lift a liquid hydrogen tank barrel into the Vertical Assembly Center at Michoud Assembly Facility in New Orleans, on July 25, 2025. Inside the center, teams will perform a circumferential weld to connect the barrel to the previously loaded forward dome. The barrel is one of five barrels, which along with the forward and aft domes, make up the liquid hydrogen tank for the fourth core stage manufactured at the site.  Artemis will pave the way for a long-term human presence on the lunar surface while ushering in the Golden Age of Innovation and Exploration. 

Teams lift a liquid hydrogen tank barrel into the Vertical Assembly Center at Michoud Assembly Facility in New Orleans, on July 25, 2025. Inside the center, teams will perform a circumferential weld to connect the barrel to the previously loaded forward dome. The barrel is one of five barrels, which along with the forward and aft domes, make up the liquid hydrogen tank for the fourth core stage manufactured at the site.  Artemis will pave the way for a long-term human presence on the lunar surface while ushering in the Golden Age of Innovation and Exploration. 

Teams lift a liquid hydrogen tank barrel into the Vertical Assembly Center at Michoud Assembly Facility in New Orleans, on July 25, 2025. Inside the center, teams will perform a circumferential weld to connect the barrel to the previously loaded forward dome. The barrel is one of five barrels, which along with the forward and aft domes, make up the liquid hydrogen tank for the fourth core stage manufactured at the site.  Artemis will pave the way for a long-term human presence on the lunar surface while ushering in the Golden Age of Innovation and Exploration.