The X-38—had it gone operational—would not have been the first reusable spacecraft. But it helped lay the groundwork for ...

Corrections & Clarifications: An earlier version of this story misstated the date of the Space Shuttle Columbia disaster. It occurred Feb. 1, 2003. For millions of Americans, it was an event that ...

Read full article: INTERACTIVE: The NASA astronauts and employees who died in service to U.S. space exploration January 28th is a Day of Remembrance honoring the lives of the crew and teacher ...

Most people will never forget where they were when the Space Shuttle Challenger exploded 73 seconds after liftoff on January 28, 1986. Today marks the 39th anniversary of that tragic event ...

The temperature was predicted to be a record low for a Space Shuttle launch. 9:38 a.m. was the launch time and the temperature then was 26 degrees. Space Shuttle Challenger was about to lift off ...