Seven American spacefarers were killed in a tragic event 40 years ago today that has become widely known as the Challenger ...

Wednesday marks a somber anniversary in American history. 40 years ago, seven astronauts were killed when Space Shuttle ...

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

Forty years ago, the Challenger space shuttle disintegrated just after lift-off. A small team of engineers tried to prevent ...

The Space Shuttle Challenger burst into a fireball just 73 seconds into its flight on January 28, 1986, killing all seven ...

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

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

The Space Shuttle Challenger was just 73 seconds into its mission when it broke apart in a fireball, claiming the lives of ...