Forty years after the Challenger disaster, NPR explores the engineers' last-minute efforts to stop the launch, their decades of guilt and the vital lessons that remain critical for NASA today.

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, ...

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 ...

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 ...

Forty years ago, I was at Mission Control at NASA's Goddard Space Flight Center for the launch of the Challenger. I was working in data communications. My job was to ensure all telemetry links between ...

Add Yahoo as a preferred source to see more of our stories on Google. On January 28, 1986, the space shuttle Challenger exploded shortly after liftoff, killing the seven crew members on board The ...

The 40th anniversary of the Space Shuttle Challenger disaster comes as NASA prepares for its next major step in human spaceflight. The Artemis II mission, which will send four astronauts around 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.

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 ...