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STS-121

STS-121 was a Space Shuttle Discovery mission to the International Space Station that tested Shuttle return-to-flight inspection and safety procedures, delivered supplies and equipment, supported station maintenance, and carried ESA astronaut Thomas Reiter to Expedition 13.

STS-121
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Identity

Aliases
Discovery STS-121ISS Assembly Flight ULF1.1Second Return to Flight Test MissionThomas Reiter Expedition 13 DeliverySTS 121
Name
STS-121
Status
completed

Details

Astronauts
Description
STS-121 was a Space Shuttle Discovery mission to the International Space Station that tested Shuttle return-to-flight inspection and safety procedures, delivered supplies and equipment, supported station maintenance, and carried ESA astronaut Thomas Reiter to Expedition 13.
Destination
International Space Station for Assembly Flight ULF1.1, Return to Flight safety-inspection and testing, station maintenance and supplies, and Expedition 13 crew delivery (Thomas Reiter)
End Date
2006-07-17
Landing Facility
Launch Site
Outcome
Successfully completed ISS Assembly Flight ULF1.1 and the second Return to Flight test mission, validating Shuttle safety procedures, delivering station supplies and maintenance hardware, and carrying ESA astronaut Thomas Reiter to Expedition 13 before landing safely at Kennedy Space Center.
Programs
Start Date
2006-07-04
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Creation Time
July 3, 2026 at 04:00:40 UTC
Updated Time
August 23, 2026 at 10:58:37 UTC

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