NASA's Scott Kelly — one of two people spending a year on the International Space Station — already feels like the orbiting outpost is home. "It's great to be up here," veteran astronaut Kelly said ...

Astronauts return to Earth weakened and unsteady after weightlessness and radiation in space take their toll on the human body. New research now shows that the humble nematode worm adapts much better ...

Now that the Artemis II astronauts are in space after the spectacular liftoff of their 10-day mission, what will they be doing? Here is the schedule of day-by-day activities for the crew and mission.