No guarantees: Inside the biggest risks facing NASAs Artemis 2 crew

NASA's next trip around the moon will push four astronauts into the most demanding flight of their lives, a mission defined by enormous speeds, vast distances, and little margin for retreat.

Artemis II, the agency’s first crewed lunar flight in more than a half-century, will also be the first time humans test the Space Launch System rocket and Orion capsule together. The 10-day flight, which could launch as early as Feb. 6, is designed to send astronauts far beyond Earth's orbit before hurtling them home at blistering speed.