Former astronaut and professor Terry Hart is opening up 40 years later about the friends and colleagues he lost on board the ...

Forty years later, Cheryl McNair remembers the shock of watching the Challenger space shuttle fall to pieces with her husband, astronaut Ronald McNair, onboard. “Now what?” Cheryl McNair, now in her ...

TODAY marks four decades since the Challenger space shuttle exploded just 73 seconds into its flight. Millions watched the ...

To demonstrate this tragic oversight, Feynman dropped a sample of the O-ring rubber in a glass of ice water. The rubber grew ...

David Klaus, a retired University of Colorado Boulder professor, was a 23-year-old launch control engineer at NASA when the ...

When a spacecraft comes home without people on board, it is not a cinematic failure but a carefully choreographed engineering ...

Barbara Nidzgorski, a lifelong educator and former Greenwich teacher, was almost onboard the Challenger. It's been 40 years ...

Challenger was a mission showcasing American space exploration and education.

Steve Hawley, who flew five Space Shuttle missions, and Krista Schaffer, a first-grade teacher at Christa McAuliffe Elementary in Lenexa reflect on the 40th anniversary of the Challenger disaster.

Dr. Ronald McNair, the second Black man in space, tragically lost his life 40 years ago when the NASA Challenger space shuttle exploded shortly after takeoff, killing all seven onboard.

A reflection on the Jan. 12, 1986, launch of Space Shuttle Columbia’s STS-61-C mission, published on the Challenger ...

Forty years after the Challenger disaster, its legacy fuels STEM education, inspiring new generations. The milestone calls ...