Today marks the 39th anniversary of the Space Shuttle Challenger disaster (Mission STS-51-L), when the shuttle's seven astronauts were killed by an explosion.

On January 28, 1986, the Space Shuttle Challenger exploded after it was launched from Kennedy Space Center in Florida in just 73 seconds which claimed the lives of seven astronauts.

Milestones like Sierra Space’s Joint Test 10B are needed to confirm Dream Chaser’s “ability to handle specialized payloads ...

There's hope': Students remember crew of the Space Shuttle Challenger Judge pauses Trump funding freeze order until Feb. 3 The 14 Most Scientifically Accurate Sci-Fi Movies Trump signs orders ...

The space agency honored the fallen Challenger crew, as well as other astronauts of Apollo 1 and space shuttle Columbia, during its annual Day of Remembrance ceremony on Jan. 23. "Today ...

40,997 people played the daily Crossword recently. Can you solve it faster than others?40,997 people played the daily Crossword recently. Can you solve it faster than others?