STS-121 Mission: International Space Station Assembly Flight ULF1.1 Space Shuttle: Discovery Launch Pad: 39B Launched: July 4, 2006, 2:37:55 p.m. EDT Landing Site: Kennedy Space Center, Fla. Landing: July 17, 2006, 9:15:49 a.m. EDT Runway: 15 Revolution: 202 Mission Duration: 12 days, 18 hours, 37 minutes and 54 seconds Main Gear Touchdown: 9:14:43 a.m. EDT Nose Gear Touchdown: 9:14:53 a.m. EDT Wheel Stop: 9:15:49 a.m. EDT Rollout Distance: 4.2 miles Miles Traveled: 5.3 million STS-121 crew: Mission Specialists Stephanie D. Wilson and Michael E. Fossum, Commander Steven W. Lindsey, Mission Specialist Piers J. Sellers, Pilot Mark E. Kelly, and Mission Specialists Thomas Reiter and Lisa M. Nowak.