Astronaut Had a Close Call Before His Friends Died in the Challenger Explosion. What He Remembers (Exclusive)

Former astronaut and professor Terry Hart is opening up 40 years later about the friends and colleagues he lost on board the ...

40 years after the Challenger disaster, a key part of the mission continues

NASA’s 1986 Challenger mission was intended to inspire students to consider a future in space. The crew’s family is continuing their legacy.

Horrifying evidence of Challenger astronauts final moments after disaster

Seven astronauts aboard the Space Shuttle Challenger died 40 years ago today in a disaster watched by millions ...

‘The teacher started crying’: Harrowing memories of Challenger space shuttle disaster broadcast to millions 40 years ago

TODAY marks four decades since the Challenger space shuttle exploded just 73 seconds into its flight. Millions watched the ...

This Day in History: Space Shuttle Challenger explodes with teacher Christa McAuliffe on board

January 28, 1986. The Space Shuttle Challenger explodes 73 seconds after lift-off. School teacher, Christa McAuliffe was one ...

Horrifying final seconds of Challenger astronauts killed in disaster watched by millions

The Space Shuttle Challenger was destroyed just 73 seconds into its flight 40 years ago today, killing all seven crew on ...