The human body isn't meant to exist without gravity. The astronauts aboard Artemis II are combatting potential physiological damage using an elegantly engineered exercise machine called the flywheel.

The Artemis II astronauts have looped around the moon, captured some extraordinary imagery (above), set a slew of records, and are now on their way back to Earth. The 10-day mission will reach its ...

This is how the four astronauts sleep, use the bathroom and work out while on their 10-day mission to the moon and back.

The biggest remaining piece of the architecture, therefore, is a lunar lander. Known in NASA parlance as the Human Landing ...

Add Yahoo as a preferred source to see more of our stories on Google. The Johnson Space Center is one of Houston's top attractions and a major destination for visitors. "Just being able to view actual ...

HOUSTON, Texas (KTRK) -- The Johnson Space Center is one of Houston's top attractions and a major destination for visitors. "Just being able to view actual equipment is just really amazing," one ...

Space Shuttle Discovery on display at the Smithsonian. NASA is beginning the process of potentially relocating Space Shuttle Discovery from the Smithsonian in Virginia to Houston. The federal space ...

Space Shuttle Columbia and her crew of seven astronauts were lost after the shuttle broke apart during reentry. Columbia was just 16 minutes from landing at the Kennedy Space Center, when Mission ...

Add Yahoo as a preferred source to see more of our stories on Google. The Space Shuttle Challenger explodes shortly after lifting off from Kennedy Space Center, in Florida, on Jan. 28, 1986. All seven ...

Forty years ago today, Americans were stunned, shocked and saddened when the Challenger space shuttle exploded 73 seconds after liftoff on a cold, cloudless day in Florida. A booster leak ignited the ...