NASA's space shuttle Challenger completed 10 missions before it broke apart during a launch in 1986, killing seven astronauts.

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.

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

Artemis II is NASA's first crewed mission toward the moon in more than 50 years - a 10-day flight looping around the moon and back. It’s expected to take place as early as next month.