Inside Science Behind Challenger Disaster

NASA's space shuttle Challenger accident was a devastating tragedy that killed seven astronauts and shocked the world on Jan. 28, 1986. Killed in the accident were Challenger commander Dick Scobee, pilot Michael Smith, mission specialists Judy Resnik, Ronald McNair and Ellison Onizuka, payload specialist Gregory Jarvis and Christa McAuliffe, who was set to become the first teacher in space.