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Shuttle Discovery rolling out of the VAB, May 18-19. picture NASA/Kim Shiflett | Shuttle Discovery once arrived at launch pad 39B, with its rotating structure, May 18-19. picture NASA/Ken Thornsley | A member of the STS-121 crew is arriving in KSC being greeted by Center Director Jim Kennedy. picture NASA/Kim Shiflett | Launch director announces that the launch is delayed for the second time, from a first scheduled on Sat. Jul. 1. picture NASA |
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A 0.0057 pounds foam question was pondered before the third launch attempt. picture NASA | Discovery's crew heads for the Astrovan and the ride to Launch Pad 39B. picture NASA/Kim Shiflett | The Second Return to Flight Mission launches on Tuesday, July 4th, at 2:37:51 p.m. EDT. picture NASA/Gianni Woods | The cargo MPLM Leonardo module transferred to the ISS. picture NASA TV |
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STS-121 mission specialist, Stephanie D. Wilson, works with equipment on the middeck of the Space Shuttle Discovery while docked at the ISS, on Flight Day 4. picture NASA | First spacewalk: working on the S0 Truss of the ISS at the end of the shuttle's Remote Manipulator System/Orbiter Booster Sensor System (RMS/OBSS), Flight Day 5. from a picture NASA | The Earth below the ISS and the Space Shuttle as seen during the first spacewalk, on Flight Day 5. from a picture NASA | Working in the Destiny laboratory of the ISS, Flight Day 6. picture NASA |
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The second spacewalk on Flight Day 7 tested the ability to use the ISS' remote manipulator arm like an aid for astronauts. picture NASA | The third spacewalk, on Flight Day 9, served to demonstrate the orbiter's heat shield repair techniques. picture NASA | Working in space, Flight Day 10. picture NASA | The ISS as seen from the Space Shuttle after the undocking at 6:08 a.m. EDT on Saturday, July 15. picture NASA |
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Shuttle Discovery landing at the Shuttle Landing Facility of the Kennedy Space Center on Monday, July 17th at 9:15 a.m. EDT. picture NASA-KSC | Senior NASA officials made a quick walk around about the orbiter after its landing, as they greeted the crew. picture NASA/Bill Ingalls | Mission officially over, as the Shuttle arrives to the Orbiter Processing Facility, KSC, having been towed after landing and ground operations. picture NASA-KSC |