NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.

The Space Shuttle Challenger exploded 40 years ago, on Jan. 28, 1986. The disaster was watched live on CNN across the globe and in person by family and friends of the crew and schoolchildren. A ...

On Jan. 28, 1986, the Space Shuttle Challenger exploded 72 seconds after launch from Cape Canaveral, killing all seven crew members, including civilian teacher Christa McAuliffe.

Add Yahoo as a preferred source to see more of our stories on Google. Forty years ago, the world watched in horror as NASA's space shuttle Challenger exploded mid-air over Florida, killing all seven ...

Add Yahoo as a preferred source to see more of our stories on Google. It's been 40 years since the space shuttle Challenger exploded shortly after liftoff Jan. 28, 1986, in Florida, killing all seven ...

(CNN) - Wednesday marks the 40th anniversary of the Challenger space shuttle explosion. It was a moment of collective grief on Jan. 28, 1986, when the space shuttle exploded during a live broadcast.