HOUSTON (AP) — The Artemis II astronauts, fresh from their successful lunar flyby, initiated a call to their colleagues aboard the International Space Station (ISS) on Tuesday as they made their way ...

Mike Massimino is a retired NASA astronaut and veteran of two Space Shuttle missions.

On Earth, people grip objects to ensure they don't fall. In space, this process changes: When astronauts hold an object without moving it and then let go, the object doesn't fall because there is no ...

In this photo provided by NASA, the Artemis II astronauts Victor Glover and Christina Koch are photographed on the flight deck of USS John P. Murtha after they were extracted from their Orion ...