Forty years after the Challenger disaster, NPR explores the engineers' last-minute efforts to stop the launch, their decades ...

Add Yahoo as a preferred source to see more of our stories on Google. 28th January 1986: An abstract smoke pattern after the space shuttle Challenger explosion, Kennedy Space Center, Florida.Dave ...

Forty years ago today, Americans were stunned, shocked and saddened when the Challenger space shuttle exploded 73 seconds after liftoff on a cold, cloudless day in Florida. A booster leak ignited the ...

(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.

The space shuttle's seven crew members died, including one civilian teacher. The tragedy changed the course of NASA's future. On the morning of January 28, 1986, seven crew members were killed when ...