Add Yahoo as a preferred source to see more of our stories on Google. Forty years ago, the world watched in horror as NASA's space shuttle Challenger exploded mid-air over Florida, killing all seven ...

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 ...

A larger-than-life look into feats of manufacturing.

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 ...