It was 40 years ago today (Jan. 28) that the space shuttle Challenger blasted off on its 10th mission to space. Sadly, the vehicle never made it there. Challenger exploded 73 seconds after liftoff ...

(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.

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 ...

Seven astronauts were killed in the 1986 space shuttle Challenger disaster. Because a teacher was aboard, millions of schoolchildren watched the event live in school. Forty years later, many of those ...

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 ...