Four astronauts with SpaceX Crew-11 are set to undock from the International Space Station to make their return to Earth. This planned departure comes after NASA announced that it postponed a spacewalk due to a crew member's medical situation.

NASA's launch window in February is getting smaller.

The four astronauts of SpaceX's Crew-11 mission will discuss their shorter-than-expected stay aboard the International Space Station today (Jan. 21), and you can watch it live.

A NASA research plane malfunctioned and had to touch down in Texas without landing gear on Tuesday, sliding across the runway on its belly and sending plumes of flame behind it, a video posted to social media showed.

A NASA video (above) reveals in great detail how its upcoming Artemis II mission is expected to play out. The space agency released the animation last year, but seeing that the Artemis II astronauts could be heading to the moon as early as February 6,

New footage shows one of NASA's WB-57 research jets spewing out flames and smoke as it skids across a runway during an emergency landing near Houston. The veteran aircraft was due to play a small role in the Artemis II mission.

Viewer video captured a NASA research plane making a belly landing at Ellington Airport in Houston.