Artemis 2 astronauts will double as human science experiments on their trip around the moon

Four people in blue flight suits stand in a room. One holds a microphone.

Artemis 2 astronauts will be studied for how sleep, stress and radiation shape human health in deep space during their moon mission next year.

The second installment of NASA's Artemis program to return to the moon and establish a sustained human presence in deep space is set to be the first crewed flight test of its Orion spacecraft and Space Launch System (SLS) rocket. The four-person crew is tasked with putting the vessel through its paces in the cislunar environment, and performing several science experiments during their mission.