Add Yahoo as a preferred source to see more of our stories on Google. Artemis II crew members Christina Koch (left) and Victor Glover (middle right) can be seen wearing wrist devices that measure ...

The Artemis II crew is pushing the limits of human spaceflight and giving scientists a closer look at how the human body handles deep space. Headed back to Earth on Tuesday, the four astronauts are on ...

Before four Artemis II astronauts strapped into their Orion capsule to soar toward the moon, a tiny bit of each of them was already on board. Incubated in a small triangular container stowed on the ...