The two biggest commercial space companies are stepping up.

Add Yahoo as a preferred source to see more of our stories on Google. The Space Launch System and Orion spacecraft at Launch Pad 39B at NASA’s Kennedy Space Center, Fla., on Jan. 28. (Sam Lott / NASA) ...

Read full article: NASA delays astronauts’ lunar trip until March after hydrogen leaks mar fueling test The Artemis II Space Launch System rocket and Orion spacecraft on Launch Pad 39B at after ...

A side view shows one of the twin SLS (Space Launch System) solid rocket boosters, core stage, Orion spacecraft, and launch abort system of NASA's Artemis II rocket at Launch Complex 39B at NASA's ...

NASA’s Artemis II Space Launch System rocket (SLS) has begun a critical fueling test at Kennedy Space Center in Florida in preparation for the mission that will carry astronauts around the Moon.

NASA's Artemis 2 moon mission is in trouble again after teams discovered a helium issue within the SLS rocket following successful wet dress rehearsal ...

NASA rolls back Artemis II rocket at Kennedy Space Center after helium issue, delaying March 6 crewed Moon flyby mission, ...

The Artemis 2 mission, which will send 4 astronauts around the moon, has been delayed until at least March 2026. A previous delay was caused by a hydrogen leak discovered during a prelaunch fueling ...