Forty years ago, the world watched in horror as NASA's space shuttle Challenger exploded mid-air, killing all seven crew members aboard. The disaster occurred at what was then the pinnacle of the U.S.

It was the morning of Jan. 28, 1986, when the Space Shuttle Challenger launched from NASA's Kennedy Space Center in Cape Canaveral, Florida — a moment that would soon become the nation's worst tragedy ...

NASA's Artemis II mission, which will test life support systems and other mechanics during a flyby of the moon, has brought the Challenger disaster to the minds of U.S. space fans once again.

Feb. 1—David Klaus, a retired University of Colorado Boulder professor, was a 23-year-old launch control engineer at NASA when the Challenger spacecraft exploded shortly after liftoff in 1986. When ...

NASA's Artemis II mission launched on April 1, marking the first U.S. space excursion of its kind since the 1970s. The 10-day mission will test life support systems during a flyby of the moon but will ...