NASA's Space Shuttle Challenger (STS-51L) crewmembers are seen in this undated handout photo taken at Johnson Space Center in Houston, Texas. Left to right: Mission Specialist Ellison S. Onizuka, Pilot Mike Smith, Teacher in Space Christa McAuliffe, Commander Dick Scobee, Payload Specialist Greg Jarvis, Mission Specialist Ron McNair and Mission Specialist Judy Resnik.
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