In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane is used to lift Space Launch System (SLS) solid rocket booster pathfinder segments and move them to be added atop other booster pathfinder segments during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane moves Space Launch System (SLS) solid rocket booster pathfinder segments to stack them atop other pathfinder segments during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a team of engineers with Exploration Ground Systems and contractor Jacobs participate in Space Launch System (SLS) solid rocket booster pathfinder stacking during a training exercise on Jan. 8, 2020. A crane is used to lift up two pathfinder segments and move them to a platform. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The team is practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers Space Launch System (SLS) solid rocket booster pathfinder segments onto a platform during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane moves Space Launch System (SLS) solid rocket booster pathfinder segments toward a platform during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers Space Launch System (SLS) solid rocket booster pathfinder segments onto a platform during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers one Space Launch System (SLS) solid rocket booster pathfinder segment onto another segment during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, pathfinders, or full-scale replicas of Space Launch System (SLS) solid rocket booster segments, are being stacked during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane moves Space Launch System (SLS) solid rocket booster pathfinder segments toward a platform during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a team of engineers with Exploration Ground Systems and contractor Jacobs participate in Space Launch System (SLS) solid rocket booster pathfinder stacking during a training exercise on Jan. 8, 2020. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The team is practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, pathfinders, or full-scale replicas of Space Launch System (SLS) solid rocket booster segments, are being stacked during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, pathfinders, or full-scale replicas of Space Launch System (SLS) solid rocket booster segments, are being stacked during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers Space Launch System (SLS) solid rocket booster pathfinder segments onto a platform during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers Space Launch System (SLS) solid rocket booster pathfinder segments onto a platform during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a crane lowers one Space Launch System (SLS) solid rocket booster pathfinder segment onto another segment during a training exercise on Jan. 8, 2020. A team of engineers with Exploration Ground Systems and crane operators and technicians with contractor Jacobs are practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

In High Bay 4 of the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida, a team of engineers with Exploration Ground Systems and contractor Jacobs participate in Space Launch System (SLS) solid rocket booster pathfinder stacking during a training exercise on Jan. 8, 2020. The booster pathfinders are inert, full-scale replicas of the actual booster hardware that will be attached to the SLS rocket for Artemis missions. The team is practicing lifting, moving and stacking maneuvers, using important ground support equipment to train employees and certify all the equipment works properly. The five-segment, 17-story-tall twin boosters will provide 3.6 million pounds of thrust each at liftoff to help launch Orion on Artemis I, its first uncrewed mission beyond the Moon.

Technicians with NASA’s Exploration Ground Systems rehearse booster stacking operations inside the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on Sept. 14, 2020, in preparation for Artemis I. The exercise involved using booster segment mock-ups, referred to as pathfinders. During the rehearsal, an aft pathfinder segment was prepared in High Bay 4 of the VAB, after which a team of crane operators moved it over to High Bay 3, where it was placed on the mobile launcher. Careful measurements were then taken before the team added a center pathfinder to the stack. Stacking of the actual Space Launch System (SLS) booster segments will occur later this year, when the rocket’s 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 NASA’s Exploration Ground Systems rehearse booster stacking operations inside the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on Sept. 14, 2020, in preparation for Artemis I. The exercise involved using booster segment mock-ups, referred to as pathfinders. During the rehearsal, an aft pathfinder segment was prepared in High Bay 4 of the VAB, after which a team of crane operators moved it over to High Bay 3, where it was placed on the mobile launcher. Careful measurements were then taken before the team added a center pathfinder to the stack. Stacking of the actual Space Launch System (SLS) booster segments will occur later this year, when the rocket’s 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 NASA’s Exploration Ground Systems rehearse booster stacking operations inside the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on Sept. 14, 2020, in preparation for Artemis I. The exercise involved using booster segment mock-ups, referred to as pathfinders. During the rehearsal, an aft pathfinder segment was prepared in High Bay 4 of the VAB, after which a team of crane operators moved it over to High Bay 3, where it was placed on the mobile launcher. Careful measurements were then taken before the team added a center pathfinder to the stack. Stacking of the actual Space Launch System (SLS) booster segments will occur later this year, when the rocket’s 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 NASA’s Exploration Ground Systems rehearse booster stacking operations inside the Vehicle Assembly Building (VAB) at the agency’s Kennedy Space Center in Florida on Sept. 14, 2020, in preparation for Artemis I. The exercise involved using booster segment mock-ups, referred to as pathfinders. During the rehearsal, an aft pathfinder segment was prepared in High Bay 4 of the VAB, after which a team of crane operators moved it over to High Bay 3, where it was placed on the mobile launcher. Careful measurements were then taken before the team added a center pathfinder to the stack. Stacking of the actual Space Launch System (SLS) booster segments will occur later this year, when the rocket’s 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.

The 212-foot-long Space Launch System (SLS) rocket core stage pathfinder is being transported to the Vehicle Assembly Building at NASA's Kennedy Space Center on Oct. 1, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

Teams from NASA’s Exploration Ground Systems and Space Launch System (SLS) practice SLS booster stacking with pathfinders inside Kennedy Space Center’s Vehicle Assembly Building on Nov. 19, 2019. Using overhead cranes and booster handling activities, the teams focused on procedures for mating a center segment onto a cylinder that simulated another segment. The exercise was performed around the clock, operating three shifts per day. SLS will launch the first woman and next man to the Moon by 2024 through the Artemis program.

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 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 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.

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.

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.

Technicians with NASA’s Exploration Ground Systems rehearse booster stacking operations 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 using booster segment mock-ups, referred to as pathfinders. During this rehearsal, an aft pathfinder segment was prepared in High Bay 4 of the VAB, after which a team of crane operators moved it over to High Bay 3, where it was placed on the mobile launcher. Stacking of the actual Space Launch System (SLS) booster segments will occur later this year, before the rocket’s 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.

During a training exercise, technicians with NASA’s Exploration Ground Systems prepare to 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.

During a training exercise, technicians with NASA’s Exploration Ground Systems prepare to 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, beforewhen 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.

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.

During a training exercise on Sept. 11, 2020, inside the Vehicle Assembly (VAB) at NASA’s Kennedy Space Center in Florida, a technician with the agency’s Exploration Ground Systems verifies a mock-up of the Space Launch System (SLS) aft booster segment, referred to as a pathfinder, was placed on the mobile launcher correctly. 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 lowering it onto 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.

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.

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.

Technicians with NASA’s Exploration Ground Systems rehearse booster stacking operations 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 using booster segment mock-ups, referred to as pathfinders. During this rehearsal, an aft pathfinder segment was prepared in High Bay 4 of the VAB, after which a team of crane operators moved it over to High Bay 3, where it was placed on the mobile launcher. Stacking of the actual Space Launch System (SLS) booster segments will occur later this year, before the rocket’s 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 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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

During a training exercise, technicians with NASA’s Exploration Ground Systems prepare to 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.

During a training exercise on Sept. 11, 2020, inside the Vehicle Assembly (VAB) at NASA’s Kennedy Space Center in Florida, technicians with the agency’s Exploration Ground Systems verify a mock-up of the Space Launch System (SLS) aft booster segment, referred to as a pathfinder, was placed on the mobile launcher correctly. 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 lowering it onto 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.

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.

The 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA’s Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 offload the 212-foot-long Space Launch System (SLS) rocket core stage pathfinder from NASA's Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA’s Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 this view from inside NASA’s Pegasus Barge, the 212-foot-long Space Launch System (SLS) rocket core stage pathfinder is being offloaded from the barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA’s Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge travels on the inland waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA's Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge travels on the inland waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA’s Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge arrives at the Launch Complex 39 turn basin wharf at Kennedy Space Center in Florida to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 this view from inside NASA’s Pegasus Barge, the 212-foot-long Space Launch System (SLS) rocket core stage pathfinder is being offloaded from the barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 and Jacobs technicians and engineers have begun offloading the 212-foot-long Space Launch System (SLS) rocket core stage pathfinder from NASA's Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 Pegasus Barge travels on the inland waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA’s Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge, which has a storied history of supporting the Space Shuttle Program, arrived at the Kennedy Space Center Launch Complex 39B turn basin wharf, carrying its first load in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Friday, Sept. 27, ferrying the 212-foot-long Space Launch System (SLS) core stage pathfinder. Weighing in at 228,000 pounds, the pathfinder is a full-scale mockup of the rocket's core stage. The pathfinder will be utilized by the Exploration Ground Systems Program and their contractor, Jacobs, to practice offloading, moving and stacking maneuvers, utilizing 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 212-foot-long Space Launch System (SLS) rocket core stage pathfinder has been offloaded from NASA’s Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 and Jacobs technicians and engineers have begun offloading the 212-foot-long Space Launch System (SLS) rocket core stage pathfinder from NASA's Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 and Jacobs technicians and engineers have begun offloading the 212-foot-long Space Launch System (SLS) rocket core stage pathfinder from NASA's Pegasus Barge at Kennedy Space Center’s Launch Complex 39 turn basin wharf on Sept. 30, 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 Sept. 27, 2019, ferrying the SLS core stage pathfinder, a full-scale mock-up of the rocket's core stage. It will be used by the Exploration Ground Systems Program and their 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 Pegasus Barge makes its way along the intercoastal waterway to its destination at the Kennedy Space Center Launch Complex 39 turn basin wharf, to make its first delivery to Kennedy in support of the agency's Artemis missions. The upgraded 310-foot-long barge arrived Sept. 27, 2019, ferrying the 212-foot-long Space Launch System rocket core stage pathfinder. The pathfinder is a full-scale mock-up of the rocket's core stage. The pathfinder will be used by the Exploration Ground Systems Program and their 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 in the foreground, 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.

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.

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.

Jim Bolton, Core Stage Element Operations manager in Exploration Ground Systems (EGS), is at the north end of the transfer aisle in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Oct. 3, 2019. Behind him is the Space Launch System Core Stage pathfinder. A cover, called a spider, is being 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 aboard 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 EGS 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.

Jim Bolton, Core Stage Element Operations manager in Exploration Ground Systems (EGS), is at the north end of the transfer aisle in the Vehicle Assembly Building at NASA’s Kennedy Space Center in Florida on Oct. 3, 2019. Behind him is the Space Launch System Core Stage pathfinder. A cover, called a spider, is being 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 aboard 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 EGS 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.