WASHINGTON — It's been 39 years since the Challenger space shuttle explosion, one of NASA's most devastating tragedies. NASA's Challenger shuttle exploded 73 seconds after lifting off on Jan. 28, 1986 ...

Forty years ago, the NASA space shuttle Challenger exploded 73 seconds after liftoff, killing all seven crew members. Among the seven crew members were five NASA astronauts, as well as a payload ...

Mr. Beat tells the story of the Space Shuttle Challenger Disaster, which shook NASA and the country as a whole as the first civilian tried to go to space. Check out the entire WeCreateEdu Space ...