Four astronauts are currently hurtling toward the Moon in a spacecraft no larger than two minivans. On the historic Artemis 2 mission, the secret to staying fit is a 13.6-kilogram device called the ...

After flying by the moon, the Artemis II mission is in the homestretch of its 10-day journey. Even a few days off Earth can significantly alter the human body. That's why the four astronauts aboard ...

The Artemis II astronauts don't have a lot of space to exercise. That's why they've got the flywheel — a small device that can be used for... Even a few days away from Earth can significantly alter ...