Based on repeated stops and starts seen on NASA's countdown clock, the complex test originally planned for late November, ran into problems at various points on Saturday. NASA provided no details, but ...

A major step toward launch day is complete as NASA's Artemis II astronauts ran through a countdown demonstration test.

🚨Mission Update: Rollout for Artemis II is less than two weeks away.This milestone begins final, system-wide testing as NASA ...

Amentum (NYSE: AMTM) delivered advanced end-to-end ground systems engineering for a key Artemis II launch rehearsal at the ...

NASA’s launch and mission teams, along with the Artemis II crew, completed a key test Dec. 20, a countdown demonstration test, ahead of the Artemis II flight around the Moon early next year.

NASA’s Artemis II crew boarded the Orion spacecraft on December 20, 2025, for a countdown demonstration test, rehearsing launch-day procedures at Kennedy Space Center’s Vehicle Assembly Building.