Crew

• Steven W. Lindsey(4), Commander
• Mark E. Kelly(2), Pilot
• Michael E. Fossum (1), Mission Specialist
• Piers Sellers(2), Mission Specialist
• Lisa Nowak (1), Mission Specialist
• Stephanie Wilson (1), Mission Specialist
• (tentative) Sergei A. Volkov (1), ISS Expedition 11 - Russia

Astronaut Piers Sellers will replace Carlos Noriega on the STS-121 mission that follows the return-to-flight trip to the International Space Station, NASA announced on Thursday, July 15, 2004. This is due to an undisclosed, temporary medical condition.

Sergei A. Volkov will be dropped off at the ISS to join his other Expedition 11 crew members (Krikalev and Phillips).

Mission Parameters

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• Perigee: 0 km
• Apogee: 0km
• Inclination: 51.6°
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Mission Highlights

STS-121 is International Space Station Flight Utilization and Logistics Flight. Alantis will deliver supplies and equipment to the orbital outpost. It will be the first mission to fly following STS-114.

STS-121 was added to the flight schedule to help accommodate the growing list of requirements originally assigned to the Return to Flight mission. The crew will re-supply the International Space Station with equipment and consumables. They will also continue the testing and development of new hardware and procedures designed to make Space Shuttle flight safer.

Related articles

• Space science
• Space shuttle
• List of space shuttle missions
• List of human spaceflights chronologically

External links

• NASA mission summary