NASA's upcoming Artemis II mission will send a crew of astronauts on a 10-day journey to the moon and back, marking the first crewed lunar mission since the Apollo era ended in 1972.

The mission represents a significant milestone in NASA's Artemis program, which aims to return humans to the lunar surface and establish a sustainable presence there. Unlike the previous Artemis I uncrewed test flight, Artemis II will carry astronauts around the moon in a flyby trajectory rather than landing on the surface.

The 10-day timeline will encompass several distinct operational phases, from launch through the trans-lunar journey, lunar flyby, and return to Earth. Each phase will test different systems and capabilities of the Orion spacecraft and Space Launch System rocket.

The mission will serve as a crucial stepping stone toward Artemis III, which is planned to land the first woman and next man on the moon's surface. The crew selected for Artemis II will gain valuable experience operating the spacecraft in deep space and lunar vicinity.

Artemis II is currently scheduled to launch no earlier than 2025, pending completion of ongoing preparations and system validations following lessons learned from the successful Artemis I mission in late 2022.