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. This year marks the 40th anniversary of the Challenger explosion, which occurred 73 seconds after liftoff on Jan. 28, 1986, ...

NASA Administrator Jared Isaacman, left, speaks with, second from left to right, former NASA Administrators Bill Nelson, Charles Bolden, and Sean O'Keefe following a wreath laying ceremony as part of ...

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, 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 ...

As the final seconds counted down before the Space Shuttle Challenger's liftoff on January 28, 1986, millions of Americans were glued to their television sets. A rocket launch was already a major ...