40th Anniversary of Space Shuttle Challenger Explosion
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NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.
Former astronaut and professor Terry Hart is opening up 40 years later about the friends and colleagues he lost on board the space shuttle Challenger explosion.
40 years ago today, millions watched in horror as NASA’s Space Shuttle Challenger exploded in mid-air. All seven crew members on board were killed—including a teacher who was about to become the first educator in space.