Photos: Remembering Challenger disaster in 38 photos

Space Shuttle Challenger FILE - This photo provided by NASA shows the crew of the Space Shuttle Challenger mission 51L. All seven members of the crew were killed when the shuttle exploded during launch on Jan. 28, 1986. Front row from left are Michael J. Smith, Francis R. (Dick) Scobee, and Ronald E. McNair. Front row from left are Ellison Onizuka, Christa McAuliffe, Gregory Jarvis, and Judith Resnik. (NASA via AP) (AP)