In the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida, Tristan Bremner, a launch vehicle technician with Jacobs, helps secure the second of two Artemis I aft booster segments for the Space Launch System onto the mobile launcher in High Bay 3 on Nov. 24, 2020. Workers with Exploration Ground Systems and contractor Jacobs teams will stack the twin five-segment boosters on the mobile launcher over a number of weeks. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. The SLS is managed by Marshall Space Flight Center in Huntsville, Alabama. Under the Artemis program, NASA will land the first woman and the next man on the Moon by 2024. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
Teams from NASA’s Kennedy Space Center in Florida transport the agency’s Artemis III SLS (Space Launch System) core stage boat-tail from the spaceport's Space Systems Processing Facility to the Vehicle Assembly Building on Thursday, July 24. Used during the assembly of the SLS core stage, the boat-tail is a fairing-like structure that protects the bottom end of the core stage.
Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the second half of the C-level work platforms, C north, for NASA’s Space Launch System (SLS) rocket, is lowered into position for installation on the north side of High Bay 3. In view below are the seven levels of previously installed platforms. The C platforms are the eighth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
Members of the media get an up-close look at the SLS (Space Launch System) rocket core stage for Artemis II inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida during Artemis Media Day on Friday, March 7, 2025. The core stage has two giant propellant tanks that collectively hold more than 733,000 gallons of super cold liquid propellant to feed the stage’s four RS-25 engines to help send astronauts inside NASA’s Orion spacecraft to venture around the Moon for Artemis II.
Teams from NASA’s Kennedy Space Center in Florida integrate NASA’s Artemis III SLS (Space Launch System) core stage engine section with its boat-tail inside the spaceport’s Vehicle Assembly Building on Wednesday, July 30, 2025. The boat-tail is a fairing-like structure that protects the bottom end of the core stage, while 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 mobile launcher with NASA’s Space Launch System (SLS) rocket and Orion spacecraft rolls out of the Vehicle Assembly Building’s High Bay 3 to Launch Complex 39B on Tuesday, Aug. 16, 2022, at NASA’s Kennedy Space Center in Florida. As part of the agency’s Artemis I flight test, the fully stacked and integrated SLS rocket and Orion spacecraft is scheduled to liftoff on Monday, Aug. 29. The first in a series of increasingly complex missions, Artemis I will provide a foundation for human deep space exploration and demonstrate our commitment and capability to extend human presence to the Moon and beyond. The primary goal of Artemis I is to thoroughly test the integrated systems before crewed missions by launching Orion atop the SLS rocket, operating the spacecraft in a deep space environment, testing Orion’s heat shield, and recovering the crew module after reentry, descent, and splashdown.
Engineers with NASA’s Exploration Ground Systems complete stacking operations on the twin SLS (Space Launch System) solid rocket boosters for Artemis II by integrating the nose cones atop the forward assemblies inside the Vehicle Assembly Building’s High Bay 3 at NASA’s Kennedy Space Center in Florida on Wednesday, Feb. 19, 2025. During three months of stacking operations, technicians used a massive overhead crane to lift 10 booster segments – five segments per booster – and aerodynamic nose cones into place on mobile launcher 1. The twin solid boosters will help support the remaining rocket components and the Orion spacecraft during final assembly of the Artemis II Moon rocket and provide more than 75 percent of the total SLS thrust during liftoff from NASA Kennedy’s Launch Pad 39B.
A Common Gallinule wades in a waterway at NASA’s Kennedy Space Center in Florida on June 22, 2020. The center shares a border with the Merritt Island National Wildlife Refuge. More than 330 native and migratory bird species, along with 25 mammal, 117 fish and 65 amphibian and reptile species call Kennedy and the wildlife refuge home.
Teams with NASA’s Exploration Ground Systems and contractor Jacobs lift the Space Launch System (SLS) core stage – the largest part of the rocket – and prepare to move it over to High Bay 3 in the Vehicle Assembly Building, where it will be placed atop the mobile launcher in between the twin solid rocket boosters, at NASA’s Kennedy Space Center in Florida on June 10, 2021. The 188,000-pound core stage, with its four RS-25 engines, will provide more than 2 million pounds of thrust during launch and ascent, and coupled with the boosters, will provide more than 8.8 million pounds of thrust to send the Artemis I mission to space. Under the Artemis program, NASA will land the first woman and first person of color on the Moon, as well as establish a sustainable presence on the lunar surface in preparation for human missions to Mars.
Kennedy Space Center Director Bob Cabana points to a display during a tour for cast and crew members of the upcoming motion picture "Hidden Figures." The group is walking thought the transfer aisle of the Vehicle Assembly Building. The movie is based on the book of the same title, by Margot Lee Shetterly. It chronicles the lives of Katherine Johnson, Dorothy Vaughan and Mary Jackson, three African-American women who worked for NASA as human "computers.” Their mathematical calculations were crucial to the success of Project Mercury missions including John Glenn’s orbital flight aboard Friendship 7 in 1962. The film is due in theaters in January 2017.
All work platforms are retracted from around NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft, secured to the mobile launcher, inside the Vehicle Assembly Building on Thursday, March 19, 2026, in preparation for rollout to Launch Complex 39B at NASA’s Kennedy Space Center in Florida. The Artemis II test flight will take Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch from NASA, and Mission Specialist Jeremy Hansen from the CSA (Canadian Space Agency), around the Moon and back to Earth with launch opportunities beginning in April 2026.
NASA’s SLS (Space Launch System) core stage for the Artemis III mission undergoes prelaunch processing inside High Bay 2 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Tuesday, May 12, 2026. This marks the first time core stage assembly operations for Artemis missions have been conducted at the spaceport. Artemis III will launch astronauts to low Earth orbit aboard the Orion spacecraft on top of SLS to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land Artemis IV astronauts on the Moon in 2028.
The Space Launch System (SLS) rocket’s interim cryogenic propulsion stage (ICPS) is moved into the transfer aisle of the Vehicle Assembly Building (VAB) by teams with NASA’s Exploration Ground Systems and contractor Jacobs at NASA’s Kennedy Space Center in Florida on Saturday, June 19, 2021. After being fueled and serviced inside the Multi-Payload Processing Facility (MPPF), the ICPS will be hoisted into place atop the SLS core stage while its Aerojet Rocketdyne-built RL-10 engine will be protected inside the launch vehicle stage adapter (LVSA) on the mobile launcher in preparation for the launch of Artemis I. The ICPS will provide Orion spacecraft with the push needed for its flight around the Moon. The first in a series of increasingly complex missions, Artemis I will test SLS and the Orion spacecraft as an integrated system prior to crewed flights in which NASA will land the first woman and person of color on the Moon.
Workers transport NASA’s IMAP (Interstellar Mapping and Acceleration Probe) spacecraft along with the agency’s Carruthers Geocorona Observatory and National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Follow On–Lagrange 1 (SWFO-L1) satellite late on Wednesday, Sept. 17, 2025, through early Thursday, Sept. 18, 2025, from the Astrotech Space Operations Facility in Titusville Florida, to the SpaceX hangar at Launch Complex 39A at the agency’s Kennedy Space Center in Florida. Technicians will soon mate the three spacecraft to a SpaceX Falcon 9 rocket in preparation for launch. Liftoff is targeted for 7:32 a.m. EDT, Tuesday, Sept. 23, from Launch Complex 39A at NASA Kennedy.
NASA’s Artemis II Orion spacecraft with its launch abort system is stacked atop the agency’s SLS (Space Launch System) rocket in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, Oct. 20, 2025. The spacecraft will carry NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen on a 10-day mission around the Moon and back in early 2026. Teams will begin conducting a series of verification tests ahead of rolling out the integrated SLS rocket to NASA Kennedy’s Launch Complex 39B for the wet dress rehearsal.
Technicians install three of four RS-25 SLS (Space Launch System) rocket engines on the work stand for integration with the Artemis III core stage rocket on Friday, Aug. 28, 2026, inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida. During Artemis III, the four RS-25 engines will launch the Orion spacecraft and its crew of four into low Earth orbit, generating more than two million pounds of thrust at liftoff.
A SpaceX Falcon Heavy rocket begins its demonstration flight with liftoff at 3:45 p.m. EST from from Launch Complex 39A at NASA's Kennedy Space Center in Florida. This is a significant milestone for the world's premier multi-user spaceport. In 2014, NASA signed a property agreement with SpaceX for the use and operation of the center's pad 39A, where the company has launched Falcon 9 rockets and prepared for the first Falcon Heavy. NASA also has Space Act Agreements in place with partners, such as SpaceX, to provide services needed to process and launch rockets and spacecraft.
The right-hand aft assembly solid rocket booster segment for NASA’s Artemis III SLS (Space Launch System) rocket arrives at the agency’s Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Thursday, July 9, 2026, ahead of stacking on top of the mobile launcher for the Artemis III mission. The twin boosters, manufactured by Northrop Grumman in Utah, will provide more than 75 percent of the SLS rocket’s total thrust at launch. The Artemis III mission will launch crew in the Orion spacecraft on top of the SLS rocket to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land astronauts on the Moon.
A construction worker wearing a safety harness and tethered lines prepares to assist with the installation of the second half of the B-level work platforms, B north, for NASA’s Space Launch System (SLS) rocket, high up in the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. The B platform will be installed on the north side of High Bay 3. The B platforms are the ninth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
NASA’s Space Launch System (SLS) rocket, with the Orion capsule atop, slowly makes its way along the crawlerway at the agency’s Kennedy Space Center in Florida on Tuesday, Aug. 16, 2022/Wednesday, Aug. 17, 2022. Carried atop the crawler-transporter 2, NASA’s Moon rocket is venturing the 4.2 miles from the Vehicle Assembly Building to Launch Complex 39B ahead of the first flight test of the fully stacked and integrated SLS rocket and Orion spacecraft, scheduled to liftoff on Monday, Aug. 29. The first in a series of increasingly complex missions, Artemis I will provide a foundation for human deep space exploration and demonstrate our commitment and capability to extend human presence to the Moon and beyond. The primary goal of Artemis I is to thoroughly test the integrated systems before crewed missions by launching Orion atop the SLS rocket, operating the spacecraft in a deep space environment, testing Orion’s heat shield, and recovering the crew module after reentry, descent, and splashdown. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.
NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft, secured to the mobile launcher, prepares to roll out from the Vehicle Assembly Building to Launch Complex 39B at NASA’s Kennedy Space Center in Florida on Saturday, Jan. 17, 2026. Seen in the background is also mobile launcher 2, which will be used on future Artemis flights beginning with Artemis IV. The Artemis II test flight will take Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch from NASA, and Mission Specialist Jeremy Hansen from the CSA (Canadian Space Agency), around the Moon and back to Earth no later than April 2026.
Kennedy Space Center Director Bob Cabana, far right, accompanies Russell Vought, second from right, director of the White House Office of Management and Budget, and NASA Administrator Jim Bridenstine, far left, on a tour of the Vehicle Assembly Building (VAB) on Aug. 28, 2020. The VAB is critical to the assembly of the Space Launch System rocket for NASA’s Artemis program. The Office of Management and Budget is working with the U.S. Congress to line up the necessary resources to land the first woman and the next man on the Moon in 2024.
Painting of the NASA logo, also called the meatball, continues on the 525-foot-tall Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on June 23, 2020. HM2 and H.I.S. Painting of Titusville, Florida, are repainting the meatball and the American Flag on the iconic building. The VAB was last painted in 2007 when the repairs were completed after 2004 Hurricanes Frances and Jeanne tore 845 panels off the building. It will take over 500 gallons of paint to paint the 209 X 110-foot flag and the 110’ X 132’ meatball.
A heavy load transport truck from Tillett Heavy Hauling in Titusville, Florida, arrives at NASA’s Kennedy Space Center in Florida, carrying the first half of the A-level work platforms, A south, for the agency’s Space Launch System (SLS) rocket. The A-level platforms are the topmost platforms for High Bay 3 in the Vehicle Assembly Building (VAB). The platform will be delivered to the VAB staging area in the west parking lot. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to High Bay 3 to support processing of the SLS and Orion spacecraft. A total of 10 levels of new platforms, 20 platform halves altogether, will surround the SLS rocket and Orion spacecraft and provide access for testing and processing.
From left, NASA astronaut Reid Wiseman, Artemis II commander; NASA astronaut Victor Glover, Artemis II pilot; and CSA (Canadian Space Agency) astronaut Jenni Gibbons, Artemis II backup crew member, participate in emergency egress training with teams from the agency’s Exploration Ground Systems Program inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Monday, May 5, 2025. Artemis II will take four astronauts around the Moon, the first crewed mission on NASA’s path to establishing a long-term presence for science and exploration through Artemis.
A section of the second half of the C-level platforms, C North, for NASA’s Space Launch System (SLS) rocket, arrives at the agency’s Kennedy Space Center in Florida. The platform was offloaded from a heavy lift transport truck and secured in a staging area in the west parking lot of the Vehicle Assembly Building (VAB). The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3 to support processing of the SLS and Orion spacecraft. A total of 10 levels of new platforms, 20 platform halves altogether, will surround the SLS rocket and Orion spacecraft and provide access for testing and processing.
Sam Dove, crawler-transporter operations engineer and driver, Jacobs Engineering, is seen inside the operator cab of the crawler-transporter during rollout operations for NASA’s Space Launch System and Orion spacecraft at the agency’s Kennedy Space Center in Florida on Tuesday, Aug. 16, 2022. The crawler-transporter is under the Artemis I stack atop the mobile launcher and will carry it 4.2 miles via the crawlerway that connects the VAB to the launch pad. The agency’s Artemis I flight test is scheduled to liftoff on Monday, Aug. 29. The first in a series of increasingly complex missions, Artemis I will provide a foundation for human deep space exploration and demonstrate our commitment and capability to extend human presence to the Moon and beyond. The primary goal of Artemis I is to thoroughly test the integrated systems before crewed missions by launching Orion atop the SLS rocket, operating the spacecraft in a deep space environment, testing Orion’s heat shield, and recovering the crew module after reentry, descent, and splashdown.
During a training exercise, technicians with NASA’s Exploration Ground Systems lower a mock-up of the Space Launch System (SLS) aft booster segment, referred to as a pathfinder, onto the mobile launcher in Kennedy Space Center’s Vehicle Assembly Building (VAB) on Sept. 11, 2020. The rehearsal involved teams preparing the aft pathfinder segment in High Bay 4 of the VAB, lifting and moving it over to High Bay 3, and placing it on the mobile launcher in preparation for Artemis I. Stacking of the actual booster segments will occur later this year, before the SLS core stage arrives at the Florida spaceport. Artemis I is the first in a series of increasingly complex missions that will test SLS and the Orion spacecraft as an integrated system prior to crewed flights to the Moon.
Painting of the NASA logo, also called the meatball, continues on the 525-foot-tall Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on June 23, 2020. HM2 and H.I.S. Painting of Titusville, Florida, are repainting the meatball and the American Flag on the iconic building. The VAB was last painted in 2007 when the repairs were completed after 2004 Hurricanes Frances and Jeanne tore 845 panels off the building. It will take over 500 gallons of paint to paint the 209 X 110-foot flag and the 110’ X 132’ meatball.
High up in the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida, a crane lowers the second half of the B-level work platforms, B north, for NASA's Space Launch System (SLS) rocket, for installation in High Bay 3. The B platform will be installed on the north side of high bay. In view below are several levels of previously installed platforms. The B platforms are the ninth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
During a training exercise, technicians with NASA’s Exploration Ground Systems lower a mock-up of the Space Launch System (SLS) aft booster segment, referred to as a pathfinder, onto the mobile launcher in Kennedy Space Center’s Vehicle Assembly Building (VAB) on Sept. 11, 2020. The rehearsal involved teams preparing the aft pathfinder segment in High Bay 4 of the VAB, lifting and moving it over to High Bay 3, and placing it on the mobile launcher in preparation for Artemis I. Stacking of the actual booster segments will occur later this year, before the SLS core stage arrives at the Florida spaceport. Artemis I is the first in a series of increasingly complex missions that will test SLS and the Orion spacecraft as an integrated system prior to crewed flights to the Moon.
High up in the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida, a crane lowers the final work platform, A north, for installation in High Bay 3. The platform will be installed and secured on its rail beam high up on the north wall of the high bay. In view on the platform are the American flag and a small tree. The installation of the final topmost level completes the 10 levels of work platforms, 20 platform halves altogether, that will surround NASA's Space Launch System rocket and the Orion spacecraft and allow access during processing for missions, including the first uncrewed flight test of Orion atop the SLS rocket in 2018. The A-level platforms will provide access to the Orion spacecraft's Launch Abort System for Orion lifting sling removal and installation of the closeout panels. The Ground Systems Development and Operations Program, with support from the center's Engineering Directorate, is overseeing upgrades and modifications to the VAB, including installation of the new work platforms.
A new service platform for NASA's Space Launch System booster engines, secured on a flatbed truck, has arrived at the Vehicle Assembly Building (VAB) at the agency's Kennedy Space Center in Florida. It was transported from fabricator Met-Con Inc. in Cocoa, Florida. The platform will be stored in the VAB and used for processing and checkout of the engines for the rocket's twin five-segment solid rocket boosters for Exploration Mission-1 (EM-1). During EM-1, an uncrewed Orion spacecraft will launch on the SLS to a stable orbit beyond the Moon and return to Earth for a splashdown in the Pacific Ocean.
Students in the My Brother’s Keeper program get an inside look at NASA Kennedy Space Center’s iconic Vehicle Assembly Building from the transfer aisle. The Florida spaceport is one of six NASA centers that participated in My Brother’s Keeper National Lab Week. The event is a nationwide effort to bring youth from underrepresented communities into federal labs and centers for hands-on activities, tours and inspirational speakers. Sixty students from the nearby cities of Orlando and Sanford visited Kennedy, where they toured the Vehicle Assembly Building, the Space Station Processing Facility and the center’s innovative Swamp Works Labs. The students also had a chance to meet and ask questions of a panel of subject matter experts from across Kennedy.
Engineers with NASA’s Exploration Ground Systems integrate the aerodynamic nose cone onto the left-hand forward assembly on the twin SLS (Space Launch System) solid rocket boosters for Artemis II inside the Vehicle Assembly Building’s High Bay 3 at NASA’s Kennedy Space Center in Florida on Tuesday, Feb. 18, 2025. Each forward assembly contains an aerodynamic top, a forward skirt housing avionics, and frustum housing motors that allow the boosters to separate from the SLS core stage after launch. The twin solid boosters will help support the remaining rocket components and the Orion spacecraft during final assembly of the Artemis II Moon rocket and provide more than 75 percent of the total SLS thrust during liftoff from NASA Kennedy’s Launch Pad 39B.
Teams with NASA’s Exploration Ground Systems and contractor Jacobs rotate the Space Launch System (SLS) core stage – the largest part of the rocket – into a vertical position in preparation for its move to High Bay 3 in the Vehicle Assembly Building, where it will be placed atop the mobile launcher in between the twin solid rocket boosters, at NASA’s Kennedy Space Center in Florida on June 11, 2021. The 188,000-pound core stage, with its four RS-25 engines, will provide more than 2 million pounds of thrust during launch and ascent, and coupled with the boosters, will provide more than 8.8 million pounds of thrust to send the Artemis I mission to space. Under the Artemis program, NASA will land the first woman and first person of color on the Moon, as well as establish a sustainable presence on the lunar surface in preparation for human missions to Mars.
An engineer adjusts equipment from the Design Visualization Lab set up inside High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center on Oct. 14, 2020. The equipment will be used to do 3-D modeling of the mobile launcher that will carry the Space Launch System and Orion spacecraft to Launch Complex 39B for the Artemis I mission. Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon. Under the Artemis program, NASA will land the first woman and the next man on the Moon in 2024.
Teams with NASA’s Exploration Ground Systems and contractor Jacobs prepare to lift the Space Launch System (SLS) core stage and transfer it over to High Bay 3 in the Vehicle Assembly Building, where it will be placed atop the mobile launcher in between the twin solid rocket boosters, at NASA’s Kennedy Space Center in Florida on June 10, 2021. The 188,000-pound core stage, which is the largest part of the rocket, will provide more than 2 million pounds of thrust during launch and ascent, and coupled with the boosters, will provide more than 8.8 million pounds of thrust to send the Artemis I mission to space. The first in an increasingly complex series of missions, Artemis I will test SLS and the Orion spacecraft as an integrated system ahead of crewed flights to the Moon.
A heavy load transport truck from Tillett Heavy Hauling in Titusville, Florida, arrives at the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida, carrying the first half of the A-level work platforms, A south, for the agency’s Space Launch System (SLS) rocket. The platform will be offloaded at the VAB staging area in the west parking lot. The A-level platforms are the topmost platforms for High Bay 3 in the Vehicle Assembly Building (VAB). The Ground Systems Development and Operations Program is overseeing upgrades and modifications to High Bay 3 to support processing of the SLS and Orion spacecraft. A total of 10 levels of new platforms, 20 platform halves altogether, will surround the SLS rocket and Orion spacecraft and provide access for testing and processing.
With all of the work platforms retracted, NASA’s Space Launch System and Orion spacecraft atop the mobile launcher are in view in High Bay 3 of the Vehicle Assembly Building at the agency’s Kennedy Space Center in Florida on June 3, 2022. The crawler-transporter, driven by engineers, will slide under the Artemis I stack atop the mobile launcher and carry it to Launch Complex 39B for a wet dress rehearsal test ahead of the Artemis I launch. Artemis I will be the first integrated test of the SLS and Orion spacecraft. In later missions, NASA will land the first woman and the first person of color on the surface of the Moon, paving the way for a long-term lunar presence and serving as a steppingstone on the way to Mars.
The left-hand and right-hand aft assembly solid rocket booster segments for NASA’s Artemis III SLS (Space Launch System) rocket are secured to the mobile launcher at the agency’s Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Saturday, July 11, 2026. The twin boosters, manufactured by Northrop Grumman in Utah, will provide more than 75 percent of the SLS rocket’s total thrust at launch. The Artemis III mission will launch astronauts in the Orion spacecraft on top of the SLS rocket to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land astronauts on the Moon.
Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the engine service platform that will provide access to the core stage of the Space Launch System (SLS) rocket is lifted up in the center of the mobile launcher (ML) in High Bay 3 on June 18, 2019. The large work platform is designed to provide unrestricted access to the RS-25 engines on the SLS core stage from the ML. The service platform will be used for Artemis 1 and subsequent missions. For Artemis 1, the Orion spacecraft will launch atop the SLS rocket from Launch Pad 39B and begin an approximately three-week mission that will send Orion thousands of miles beyond the Moon. Exploration Ground Systems is overseeing work on the ML.
A heavy-lift crane lifts the first half of the C-level work platforms, C south, for NASA’s Space Launch System (SLS) rocket, high up from the transfer aisle floor of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. Large Tandemloc bars have been attached to the platform to keep it level during lifting and installation. The B platform will be moved into High Bay 3 for installation on the south wall. The B platforms are the ninth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
In this view looking down inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on March 11, 2022, the work platforms are being retracted from around the Artemis I Space Launch System rocket and Orion spacecraft in preparation to roll out to launch pad 39B. The Kennedy ground systems team is working to remove equipment and scaffolding away from the rocket and will continue retracting the platforms until the entire rocket is revealed ahead of the wet dress rehearsal test, which is scheduled to occur approximately two weeks after it arrives to 39B. Artemis I is the first in a series of increasingly complex missions that will enable human exploration to the Moon and Mars.
NASA astronaut Victor Glover stands inside Kennedy Space Center’s Vehicle Assembly Building on July 15, 2021, near the agency’s Space Launch System (SLS) rocket that will power the Orion spacecraft on the Artemis I mission later this year. Artemis I will be a test of Orion and SLS as an integrated system ahead of crewed flights to the Moon. Under Artemis, NASA aims to land the first woman and first person of color on the Moon and establish long-term lunar exploration.
Workers prepare to unload the second half of the A-level work platforms, A north, for NASA's Space Launch System (SLS) rocket, from a heavy load transport truck in a staging area near the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. This is the final platform delivered to Kennedy. The A-level platforms are the topmost platforms for High Bay 3 in the VAB. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to High Bay 3 to support processing of the SLS and Orion spacecraft. A total of 10 levels of new platforms, 20 platform halves altogether, will surround the SLS rocket and Orion spacecraft and provide access for testing and processing.
In High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the right-hand forward segment is lowered by crane on top of the center forward segment on the mobile launcher (ML) for the Space Launch System (SLS) on March 3, 2021. Workers with Exploration Ground Systems and contractor Jacobs teams are stacking the twin five-segment boosters on the ML over a number of weeks. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. Marshall Space Flight Center in Huntsville, Alabama, manages the SLS. Under the Artemis program, NASA will land the first woman and the next man on the Moon. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
Dick Bergmann, at right, original lead designer for the Vehicle Assembly Building, stands on the roof of the iconic facility during a tour on Nov. 22, 2019 at NASA’s Kennedy Space Center in Florida. The VAB was recognized with the National Historic Civil Engineering Landmark award by the Florida Section American Society of Civil Engineers during a ceremony on Jan. 10, 2020. The VAB is the first building at Kennedy Space Center to earn this distinction. At the time of its completion, the 129-million-cubic-foot structure was the largest building in the world. Originally designed and built to accommodate the Saturn V/Apollo used in Project Apollo, the VAB was later modified for its role in the Space Shuttle Program.
The Space Launch System (SLS) core stage for NASA’s Artemis I mission is in the transfer aisle of the Vehicle Assembly Building at Kennedy Space Center in Florida on May 5, 2021. Teams from the center’s Exploration Ground Systems and contractor Jacobs will perform checkouts ahead of integrating the massive rocket stage with the twin solid rocket boosters, Orion spacecraft, and additional flight hardware ahead of the Artemis I launch. Artemis I will be the first integrated test of SLS and Orion and will pave the way for landing the first woman and first person of color on the lunar surface. It will be a proving ground for deep space exploration, leading the agency’s efforts under the Artemis program for a sustainable presence on the Moon and preparing for human missions to Mars.
The right-hand aft assembly solid rocket booster segment for NASA’s Artemis III SLS (Space Launch System) rocket arrives at the agency’s Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Thursday, July 9, 2026, ahead of stacking on top of the mobile launcher for the Artemis III mission. The twin boosters, manufactured by Northrop Grumman in Utah, will provide more than 75 percent of the SLS rocket’s total thrust at launch. The Artemis III mission will launch crew in the Orion spacecraft on top of the SLS rocket to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land astronauts on the Moon.
The mobile launcher with NASA’s Space Launch System (SLS) rocket and Orion spacecraft rolls out of the Vehicle Assembly Building’s High Bay 3 to Launch Complex 39B on Tuesday, Aug. 16, 2022, at NASA’s Kennedy Space Center in Florida. As part of the agency’s Artemis I flight test, the fully stacked and integrated SLS rocket and Orion spacecraft is scheduled to liftoff on Monday, Aug. 29. The first in a series of increasingly complex missions, Artemis I will provide a foundation for human deep space exploration and demonstrate our commitment and capability to extend human presence to the Moon and beyond. The primary goal of Artemis I is to thoroughly test the integrated systems before crewed missions by launching Orion atop the SLS rocket, operating the spacecraft in a deep space environment, testing Orion’s heat shield, and recovering the crew module after reentry, descent, and splashdown.
In the transfer aisle of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida, the second of two Artemis I aft booster segments for the Space Launch System is lifted by crane for its move into High Bay 3 on Nov. 24, 2020. Workers with Exploration Ground Systems and contractor Jacobs teams will stack the twin five-segment boosters on the mobile launcher in High Bay 3 over a number of weeks. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. The SLS is managed by Marshall Space Flight Center in Huntsville, Alabama. Under the Artemis program, NASA will land the first woman and the next man on the Moon by 2024. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
Teams with NASA’s Exploration Ground Systems and contractor Jacobs integrate the interim cryogenic propulsion stage (ICPS) for NASA’s Space Launch System (SLS) rocket with the launch vehicle stage adapter (LVSA) atop the massive SLS core stage in the agency’s Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on July 5, 2021. The ICPS is a liquid oxygen and liquid hydrogen-based system that will fire its RL 10 engine to give the Orion spacecraft the big in-space push needed to fly tens of thousands of miles beyond the Moon. The next component to be stacked on top of ICPS will be the Orion stage adapter, which will connect the ICPS with the spacecraft. Through Artemis, NASA will send the first woman and the first person of color to the lunar surface, as well as establish a sustainable presence on and around the Moon. As the first in an increasingly complex set of missions, Artemis I will test SLS and Orion as an integrated system prior to crewed flights to the Moon.
SpaceX’s Falcon 9 rocket, with the Dragon Endurance spacecraft atop, lifts off from NASA’s Kennedy Space Center Launch Complex 39A in Florida on Oct. 5, 2022, on the agency’s SpaceX Crew-5 launch. Inside Endurance are NASA astronauts Nicole Mann, commander; Josh Cassada, pilot; and Mission Specialists Koichi Wakata, of JAXA (Japan Aerospace Exploration Agency), and Roscosmos cosmonaut Anna Kikina. The crew is heading to the International Space Station for a science expedition mission as part of the agency’s Commercial Crew Program. Liftoff occurred at noon EDT.
The core stage inter-tank umbilical – one of multiple connections on the mobile launcher that will provide power, communications, and pressurized gases to the rocket – is attached to the Space Launch System (SLS) core stage inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Aug. 12, 2021. Before the Orion spacecraft can be stacked atop the SLS, teams are conducting various tests to ensure the rocket can properly communicate with the ground systems equipment that will be used for launch. The first in an increasingly complex set of missions, Artemis I will test SLS and Orion as an integrated system prior to crewed flights to the Moon. Through Artemis, NASA will send the first woman and the first person of color to the lunar surface, as well as establish a sustainable presence on and around the Moon.
In the Vehicle Assembly Building, markers show the hail damage being repaired on the external tank of Space Shuttle Atlantis. The white hole with a red circle around it is a hole prepared for molding and material application. The red material is sealant tape so the mold doesn't leak when the foam rises against the mold. The white/ translucent square mold is an area where the foam has been applied and the foam has risen and cured against the mold surface. The area will be de-molded and sanded flush the with adjacent area. In late February, Atlantis' external tank received hail damage during a severe thunderstorm that passed through the Kennedy Space Center Launch Complex 39 area. The hail caused visible divots in the giant tank's foam insulation as well as minor surface damage to about 26 heat shield tiles on the shuttle's left wing. The March launch was postponed and has not yet been rescheduled due to the repair process.
Kelvin Manning, right, associate director, technical, of NASA’s Kennedy Space Center in Florida, points out various landmarks to White House Office of Science and Technology Policy Director Kelvin Droegemeier, center, and NASA Associate Administrator for STEM Engagement Mike Kincade, left, from the roof of the Vehicle Assembly Building on July 10, 2019. Droegemeier visited the iconic rocket-assembly facility in the heart of Kennedy’s Launch Complex 39 Area during a tour of the multi-user spaceport.
Construction workers use specialized tools to help secure the second half of the D-level work platforms, D north, for NASA’s Space Launch System (SLS) rocket, into position in High Bay 3 in the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida. The D platform is being installed on the north side of the high bay. The D platforms are the seventh of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s journey to Mars.
The second half of the B-level work platforms, B north, for NASA's Space Launch System (SLS) rocket, is lowered by crane for installation on the north side of High Bay 3 in the Vehicle Assembly Building (VAB) at NASA's Kennedy Space Center in Florida. Large Tandemloc bars have been attached to the platform to keep it level during lifting, lowering and installation. In view below are several levels of previously installed platforms. The B platforms are the ninth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
Inside High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers the right-hand forward segment onto the center forward segment on Feb. 23, 2021. Workers with Exploration Ground Systems and contractor Jacobs are completing the stacking of the twin solid rocket boosters on the mobile launcher for NASA’s Space Launch System (SLS). In view at left is the left-hand solid rocket booster. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. The SLS is managed by Marshall Space Flight Center in Huntsville, Alabama. Under the Artemis program, NASA will land the first woman and the next man on the Moon by 2024. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
Workers with Bragg Crane and Rigging prepare for the lift of the engine service platform that will provide access to the core stage of the Space Launch System (SLS) rocket on the mobile (ML) in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on June 18, 2019. The large work platform is designed to provide unrestricted access to the RS-25 engines on the SLS core stage from the ML. The service platform will be used for Artemis 1 and subsequent missions. For Artemis 1, the Orion spacecraft will launch atop the SLS rocket from Launch Pad 39B and begin an approximately three-week mission that will send Orion thousands of miles beyond the Moon. Exploration Ground Systems is overseeing work on the ML.
In the transfer aisle of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, workers use a crane to lift the right-hand forward assembly up for transfer into High Bay 3 for the Space Launch System (SLS) on March 2, 2021. The forward assembly will be attached to the center forward segment on the mobile launcher (ML). Workers with Exploration Ground Systems and contractor Jacobs teams are stacking the twin five-segment boosters on the ML over a number of weeks. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. Marshall Space Flight Center in Huntsville, Alabama, manages the SLS. Under the Artemis program, NASA will land the first woman and the next man on the Moon. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
A heavy-lift crane lifts the second half of the C-level work platforms, C north, for NASA’s Space Launch System (SLS) rocket, up from the transfer aisle floor of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. The C platform will be installed on the north side of High Bay 3. The C platforms are the eighth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
A close-up view of Moonikin “Campos” secured in a seat inside the Artemis I Orion crew module atop the Space Launch System rocket in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Aug. 3, 2022. Artemis I will provide a foundation for human deep space exploration and demonstrate NASA’s capability to extend human present to the Moon and beyond. The primary goal of Artemis I is to thoroughly test the Space Launch System rocket and Orion spacecraft’s integrated systems before crewed missions. Under Artemis, NASA aims to land the first woman and first person of color on the Moon and establish sustainable lunar exploration.
Technicians with NASA’s Exploration Ground Systems team use a crane to lift and secure NASA’s Orion spacecraft on top of the SLS (Space Launch System) rocket in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Saturday, Oct. 18, 2025, for the agency’s Artemis II mission. Set to launch in 2026, the spacecraft will carry NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen on a 10-day mission around the Moon and back. Once stacked, teams will begin conducting a series of verification tests ahead of rolling out to Launch Complex 39B for the wet dress rehearsal at NASA Kennedy.
The Space Launch System Core Stage pathfinder is being moved to the north end of the transfer aisle inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Oct. 3, 2019. A cover, called a spider, will be attached to the top of the pathfinder. With the spider secured in place, a crane will be attached to it to lift the pathfinder into the vertical position. The 212-foot-long core stage pathfinder arrived in NASA's Pegasus Barge at Kennedy’s Launch Complex 39 turn basin wharf on Sept. 27, 2019. The Pegasus Barge made its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by Exploration Ground Systems and its contractor, Jacobs, to practice offloading, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The pathfinder will stay at Kennedy for approximately one month before trekking back to NASA's Michoud Assembly Facility in Louisiana.
NASA’s mobile launcher enters the Vehicle Assembly Building following its approximately 4-mile trek from Launch Complex 39B at the agency’s Kennedy Space Center in Florida on Friday, April 17, 2026, in preparation for Artemis III stacking operations. Teams will perform checkouts, inspections, and data analysis, and make repairs to the tower that saw damage during launch of NASA’s Artemis II test flight on April 1, 2026.
A heavy-lift crane lowers the first half of the E-level work platforms, E south, for NASA’s Space Launch System (SLS) rocket, into position for installation in High Bay 3 in the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. Large Tandemloc bars have been attached to the platform to keep it level during lifting and installation. The E platform will be installed on the south side of High Bay 3, about 246 feet above the floor. The E platforms are the sixth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s journey to Mars.
Technicians integrate the left forward booster segment for NASA’s Artemis III SLS (Space Launch System) rocket onto the left booster segments atop the mobile launcher in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Thursday, Sept. 17, 2026. The SLS rocket’s twin boosters, each made up of five segments manufactured by Northrop Grumman in Utah, will provide more than 75 percent of the rocket’s total thrust at launch. The Artemis III mission will launch crew in the Orion spacecraft on top of the SLS rocket to test rendezvous and docking capabilities between Orion and commercial spacecraft needed to land astronauts on the Moon.
Kelvin Manning, at right, Kennedy Space Center’s associate director, technical, speaks to Dick Bergmann, center, original lead designer for the Vehicle Assembly (VAB), during a tour of the iconic facility on Nov. 22, 2019, at NASA’s Kennedy Space Center in Florida. The VAB was recognized with the National Historic Civil Engineering Landmark award by the Florida Section American Society of Civil Engineers during a ceremony on Jan. 10, 2020. The VAB is the first building at Kennedy to earn this distinction. At the time of its completion, the 129-million-cubic-foot structure was the largest building in the world. Originally designed and built to accommodate the Saturn V/Apollo used in Project Apollo, the VAB was later modified for its role in the Space Shuttle Program.
All work platforms are retracted from around NASA’s Artemis II SLS (Space Launch System) rocket and Orion spacecraft, secured to the mobile launcher, inside the Vehicle Assembly Building on Thursday, March 19, 2026, in preparation for rollout to Launch Complex 39B at NASA’s Kennedy Space Center in Florida. The Artemis II test flight will take Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch from NASA, and Mission Specialist Jeremy Hansen from the CSA (Canadian Space Agency), around the Moon and back to Earth with launch opportunities beginning in April 2026.
Preparations are underway to move the Space Launch System Core Stage pathfinder to the north end of the transfer aisle inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Oct. 3, 2019. A cover, called a spider, will be attached to the top of the pathfinder. With the spider secured in place, a crane will be attached to it to lift the pathfinder into the vertical position. The 212-foot-long core stage pathfinder arrived in NASA's Pegasus Barge at Kennedy’s Launch Complex 39 turn basin wharf on Sept. 27, 2019. The Pegasus Barge made its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by Exploration Ground Systems and its contractor, Jacobs, to practice offloading, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The pathfinder will stay at Kennedy for approximately one month before trekking back to NASA's Michoud Assembly Facility in Louisiana.
Preparations are underway to move the Space Launch System Core Stage pathfinder to the north end of the transfer aisle inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Oct. 3, 2019. A cover, called a spider, in view at the far end of the transfer aisle, will be attached to the top of the pathfinder. With the spider secured in place, a crane will be attached to it to lift the pathfinder into the vertical position. The 212-foot-long core stage pathfinder arrived in NASA's Pegasus Barge at Kennedy’s Launch Complex 39 turn basin wharf on Sept. 27, 2019. The Pegasus Barge made its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by Exploration Ground Systems and its contractor, Jacobs, to practice offloading, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The pathfinder will stay at Kennedy for approximately one month before trekking back to NASA's Michoud Assembly Facility in Louisiana.
In High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, the left-hand center booster segment for Artemis I is lowered onto the aft booster segment on the mobile launcher for the Space Launch System (SLS) on Jan. 7, 2021. Workers with Exploration Ground Systems and contractor Jacobs teams will stack the twin five-segment boosters on the mobile launcher in High Bay 3 over a number of weeks. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. The SLS is managed by Marshall Space Flight Center in Huntsville, Alabama. Under the Artemis program, NASA will land the first woman and the next man on the Moon by 2024. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
Workers use a crane to lift the left-hand forward segment up for transfer into High Bay 3 of the Vehicle Assembly Building for NASA’s Space Launch System (SLS) in the transfer aisle of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Feb. 18, 2021. The forward segment will be attached to the center forward segment on the mobile launcher. Workers with Exploration Ground Systems and contractor Jacobs teams are stacking the twin five-segment boosters on the ML over a number of weeks. When the core stage arrives, it will join the boosters on the mobile launcher, followed by the interim cryogenic propulsion stage and Orion spacecraft. Manufactured by Northrop Grumman in Utah, the twin boosters provide more than 75 percent of the total SLS thrust at launch. The SLS is managed by Marshall Space Flight Center in Huntsville, Alabama. Under the Artemis program, NASA will land the first woman and the next man on the Moon by 2024. The first in a series of increasingly complex missions, Artemis I will test the Orion spacecraft and SLS as an integrated system ahead of crewed flights to the Moon.
Space Launch System (SLS) Program Manager John Honeycutt, left, and Orion Program Manager Cathy Koerner pose for a photo while touring the Vehicle Assembly Building (VAB) during a visit to the agency’s Kennedy Space Center in Florida on June 23, 2021. Seen in the background are the aft booster segments – or the bottommost portion – of the SLS twin solid rocket boosters for Artemis I. The first in an increasingly complex set of missions, Artemis I will test SLS and the Orion spacecraft as an integrated system prior to crewed flights to the Moon. Through Artemis, NASA will land the first woman and first person of color on the lunar surface, as well as establish a sustainable presence on and around the Moon.
NASA engineer Krista Shaffer, right, is interviewed by Rachel Power of NASA’s Digital Expansion to Engage the Public (DEEP) Network inside Kennedy Space Center’s Vehicle Assembly Building during Introduce a Girl to Engineering Day. Held in conjunction with National Engineers Week and Girl Day, the event allowed students from throughout the nation to speak with female NASA scientists and technical experts.
Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, operations are underway to attach a cover, called a spider, to the top of the Space Launch System (SLS) Core Stage pathfinder on Oct. 3, 2019. With the spider secured in place, a crane will be attached to it to lift the pathfinder into the vertical position. The 212-foot-long core stage pathfinder arrived in NASA's Pegasus Barge at Kennedy’s Launch Complex 39 turn basin wharf on Sept. 27, 2019. The Pegasus Barge made its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by Exploration Ground Systems and its contractor, Jacobs, to practice offloading, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The pathfinder will stay at Kennedy for approximately one month before trekking back to NASA's Michoud Assembly Facility in Louisiana.
The SpaceX Falcon Heavy rocket’s two side cores descend toward landing at Cape Canaveral Air Force Station in Florida following a successful liftoff at 3:45 p.m. EST from Launch Complex 39A at NASA's Kennedy Space Center. This demonstration flight is a significant milestone for the world's premier multi-user spaceport. In 2014, NASA signed a property agreement with SpaceX for the use and operation of the center's pad 39A, where the company has launched Falcon 9 rockets and prepared for the first Falcon Heavy. NASA also has Space Act Agreements in place with partners, such as SpaceX, to provide services needed to process and launch rockets and spacecraft.
The Orion spacecraft for NASA’s Artemis I mission, fully assembled with its launch abort system, was lifted and placed on top of the Space Launch System (SLS) rocket in High Bay 3 of the Vehicle Assembly Building at Kennedy Space Center in Florida on Oct. 20, 2021. The stacking of Orion on top of the SLS completes assembly for the Artemis I flight test. Teams will begin conducting a series of verification tests ahead of rolling out to Launch Complex 39B for the Wet Dress Rehearsal. Artemis I will be an uncrewed test flight of the Orion spacecraft and Space Launch System rocket as an integrated system ahead of crewed flights to the Moon. Under Artemis, NASA aims to land the first woman and first person of color on the Moon and establish sustainable lunar exploration.
A SpaceX Falcon Heavy rocket begins its demonstration flight with liftoff at 3:45 p.m. EST from from Launch Complex 39A at NASA's Kennedy Space Center in Florida. This is a significant milestone for the world's premier multi-user spaceport. In 2014, NASA signed a property agreement with SpaceX for the use and operation of the center's pad 39A, where the company has launched Falcon 9 rockets and prepared for the first Falcon Heavy. NASA also has Space Act Agreements in place with partners, such as SpaceX, to provide services needed to process and launch rockets and spacecraft.
Seen here is a close-up view of the Orion stage adapter (OSA) structural test article atop the Space Launch System (SLS) rocket inside the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on Aug. 12, 2021. The test article, representing the mass and weight of the actual flight hardware, is being used for various tests inside the VAB ahead of OSA stacking operations. The first in an increasingly complex set of missions, Artemis I will test SLS and the Orion spacecraft as an integrated system prior to crewed flights to the Moon. Through Artemis, NASA will send the first woman and the first person of color to the lunar surface, as well as establish a sustainable presence on and around the Moon.
The vehicle for Orion’s Ascent Abort-2 (AA-2) fight test passes by the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on its 21.5-mile-trek to Space Launch Complex 46 at Cape Canaveral Air Force Station on May 22, 2019. During AA-2, a test version of Orion will launch on a booster to more than six miles in altitude, where Orion’s launch abort system will pull the capsule away to demonstrate it can keep a future crew inside safe if an emergency occurs during ascent on the Space Launch System rocket. The AA-2 elements will be stacked together at the launch pad over the next several weeks. The launch is planned for July 2 and is a critical safety test that helps pave the way for Artemis missions near the Moon, and will enable astronauts to set foot on the lunar surface by 2024.
Teams with NASA’s Exploration Ground Systems and contractor Jacobs begin to rotate the Space Launch System (SLS) core stage – the largest part of the rocket – into a vertical position in preparation for its move to High Bay 3 in the Vehicle Assembly Building, where it will be placed atop the mobile launcher in between the twin solid rocket boosters, at NASA’s Kennedy Space Center in Florida on June 11, 2021. The 188,000-pound core stage, with its four RS-25 engines, will provide more than 2 million pounds of thrust during launch and ascent, and coupled with the boosters, will provide more than 8.8 million pounds of thrust to send the Artemis I mission to space. Under the Artemis program, NASA will land the first woman and first person of color on the Moon, as well as establish a sustainable presence on the lunar surface in preparation for human missions to Mars.
Technicians with NASA’s Exploration Ground Systems Program complete installation of the America 250 emblem on the twin SLS (Space Launch System) solid rocket boosters for the Artemis II mission inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Thursday, Dec. 4, 2025. The SLS rocket and the Orion spacecraft will carry NASA astronauts Reid Wiseman, Victor Glover, Christina Koch, and CSA (Canadian Space Agency) astronaut Jeremy Hansen on a 10-day mission around the Moon and back in early 2026 from Launch Complex 39B at NASA Kennedy. America 250 commemorates the 250th anniversary of the signing of the Declaration of Independence with NASA celebrating the “Spirit of Innovation” theme to inspire future generations.
A closeup view of NASA’s Orion spacecraft with the launch abort system atop secured to NASA’s crawler-transporter 2 and the agency’s Artemis II SLS (Space Launch System) rocket prepares to roll out from the Vehicle Assembly Building to Launch Complex 39B at NASA’s Kennedy Space Center in Florida on Saturday, Jan. 17, 2026. The Artemis II test flight will take Commander Reid Wiseman, Pilot Victor Glover, and Mission Specialist Christina Koch from NASA, and Mission Specialist Jeremy Hansen from the CSA (Canadian Space Agency), around the Moon and back to Earth no later than April 2026.
A heavy load transport truck from Tillett Heavy Hauling in Titusville, Florida, arrives at the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida, carrying the second half of the A-level work platforms, A north, for the agency’s Space Launch System (SLS) rocket. This is the final platform delivered to Kennedy. The A-level platforms are the topmost platforms for High Bay 3 in the Vehicle Assembly Building (VAB). The platform will be delivered to the VAB staging area in the west parking lot. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to High Bay 3 to support processing of the SLS and Orion spacecraft. A total of 10 levels of new platforms, 20 platform halves altogether, will surround the SLS rocket and Orion spacecraft and provide access for testing and processing.
Technicians with NASA’s Exploration Ground Systems rehearse lifting operations using a mock-up of the Space Launch System (SLS) aft booster segment, referred to as a pathfinder, inside the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on Sept. 11, 2020, in preparation for Artemis I. The exercise involved preparing the aft pathfinder segment in High Bay 4 of the VAB and moving it over to High Bay 3, where it was placed on the mobile launcher. Stacking of the actual booster segments will occur later this year, before the SLS core stage arrives at Kennedy. Artemis I is the first in a series of increasingly complex missions that will test SLS and the Orion spacecraft as an integrated system prior to crewed flights to the Moon.
Technicians with Exploration Ground Systems integrate the right forward segment atop the center forward segment on NASA’s SLS (Space Launch System) Moon rocket booster inside the Vehicle Assembly Building’s High Bay 3 at Kennedy Space Center in Florida on Friday, Feb. 14, 2025. The twin solid boosters, five segments on each side, will help support the remaining rocket components and the Orion spacecraft during final assembly of the Artemis II Moon rocket and provide more than 75 percent of the total SLS thrust during liftoff from NASA Kennedy’s Launch Pad 39B.
Construction workers wearing safety harnesses and tethered lines assist with the installation of the second half of the B-level work platforms, B north, for NASA’s Space Launch System (SLS) rocket, high up in the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. They are securing the large bolts that hold the platform securely in place on the north side of High Bay 3. The B platforms are the ninth of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s Journey to Mars.
During a training exercise, technicians with NASA’s Exploration Ground Systems lower a mock-up of the Space Launch System (SLS) aft booster segment, referred to as a pathfinder, onto the mobile launcher in Kennedy Space Center’s Vehicle Assembly Building (VAB) on Sept. 11, 2020. The rehearsal involved teams preparing the aft pathfinder segment in High Bay 4 of the VAB, lifting and moving it over to High Bay 3, and placing it on the mobile launcher in preparation for Artemis I. Stacking of the actual booster segments will occur later this year, before the SLS core stage arrives at the Florida spaceport. Artemis I is the first in a series of increasingly complex missions that will test SLS and the Orion spacecraft as an integrated system prior to crewed flights to the Moon.
NASA’s crawler-transporter 2, carrying NASA’s Artemis II SLS (Space Launch System) rocket with the Orion spacecraft secured to mobile launcher 1, leaves Launch Complex 39B to roll back to the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Wednesday, Feb. 25, 2026, to troubleshoot the flow of helium to the rocket’s upper stage, the interim cryogenic propulsion stage. Once complete, the SLS rocket will roll back to Launch Complex 39B to prepare to launch four astronauts around the Moon and back for the Artemis II test flight.
In this view from above, a heavy-lift crane lowers the first half of the D-level work platforms, D south, for NASA’s Space Launch System (SLS) rocket, into High Bay 3 in the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida. The D platform will be installed on the south side of the high bay. The D platforms are the seventh of 10 levels of work platforms that will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. The Ground Systems Development and Operations Program is overseeing upgrades and modifications to VAB High Bay 3, including installation of the new work platforms, to prepare for NASA’s journey to Mars.
The Space Launch System (SLS) core stage is seen in the transfer aisle of the Vehicle Assembly Building (VAB) at NASA’s Kennedy Space Center in Florida on June 4, 2021. Teams with the agency’s Exploration Ground Systems and contractor Jacobs are preparing to lift the 188,000-pound core stage and place it on the mobile launcher in between the two solid rocket boosters in High Bay 3 of the VAB. The core stage alone will provide more than 2 million pounds of thrust at launch, and coupled with the boosters, will provide more than 8.8 million pounds of thrust to launch the Artemis I mission. The first in an increasingly complex series of missions, Artemis I will test SLS and the Orion spacecraft as an integrated system ahead of crewed flights to the Moon.
Kennedy Space Center Director Bob Cabana, center, accepts the National Historic Civil Engineering Landmark award from the Florida Section American Society of Civil Engineers (ASCE) for the Vehicle Assembly Building during a ceremony in front of the iconic facility on Jan. 10, 2020. Holding the award with Cabana is Peter Moore, ASCE Region 5 director. At far left is Kelvin Manning, associate director, technical. The ASCE nominated the historic building and bestowed the award. The VAB is the first building at Kennedy Space Center to earn this distinction. At the time of its completion, the 129-million-cubic-foot structure was the largest building in the world. Originally designed and built to accommodate the Saturn V/Apollo used in Project Apollo, the VAB was later modified for its role in the Space Shuttle Program.
NASA’s crawler-transporter 2, carrying NASA’s Artemis II SLS (Space Launch System) rocket with the Orion spacecraft secured to mobile launcher 1, leaves Launch Complex 39B to roll back to the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Wednesday, Feb. 25, 2026, to troubleshoot the flow of helium to the rocket’s upper stage, the interim cryogenic propulsion stage. Once complete, the SLS rocket will roll back to Launch Complex 39B to prepare to launch four astronauts around the Moon and back for the Artemis II test flight.
The Artemis I Orion spacecraft, secured on the Space Launch System and enclosed in its launch abort system, is in view high up in High Bay 3 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Aug. 8, 2022. Artemis I will provide a foundation for human deep space exploration and demonstrate NASA’s capability to extend human presence to the Moon and beyond. The primary goal of Artemis I is to thoroughly test the Space Launch System rocket and Orion spacecraft’s integrated systems before crewed missions. Under Artemis, NASA aims to land the first woman and first person of color on the Moon and establish sustainable lunar exploration.
Encapsulated inside its payload fairing, the Cygnus spacecraft for the upcoming Orbital ATK Commercial Resupply Services-6 mission moves past the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida. Mounted atop a KAMAG transporter, Cygnus is being moved to Space Launch Complex-41 at Cape Canaveral Air Force Station where it will be mounted atop a United Launch Alliance Atlas V rocket. The Cygnus is scheduled to lift off atop a United Launch Alliance Atlas V rocket on March 22 to deliver hardware and supplies to the International Space Station.
A SpaceX Falcon Heavy rocket begins its demonstration flight with liftoff at 3:45 p.m. EST from from Launch Complex 39A at NASA's Kennedy Space Center in Florida. This is a significant milestone for the world's premier multi-user spaceport. In 2014, NASA signed a property agreement with SpaceX for the use and operation of the center's pad 39A, where the company has launched Falcon 9 rockets and prepared for the first Falcon Heavy. NASA also has Space Act Agreements in place with partners, such as SpaceX, to provide services needed to process and launch rockets and spacecraft.
Inside the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, Jacobs TOSC workers assist as a cover, called the spider, is moved closer to be attached to the top of the Space Launch System (SLS) Core Stage pathfinder on Oct. 4, 2019. With the spider secured in place, a crane will be attached to it to lift the pathfinder into the vertical position. The 212-foot-long core stage pathfinder arrived on NASA's Pegasus Barge at Kennedy’s Launch Complex 39 turn basin wharf on Sept. 27, 2019. The Pegasus Barge made its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by Exploration Ground Systems and its contractor, Jacobs, to practice offloading, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The pathfinder will stay at Kennedy for approximately one month before trekking back to NASA's Michoud Assembly Facility in Louisiana.