NASA fired up RS-25 engine No. 20001 at the Fred Haise Test Stand at NASA’s Stennis Space Center at Bay St. Louis, Mississippi. The test lasted about "eight-and-a-half minutes (500 seconds), the same amount of time RS-25 engines fire during a launch of an SLS (Space Launch System) rocket on Artemis missions to the Moon,

With repairs to the Orion spacecraft and Space Launch System rocket now completed, NASA has officially set April 1, 2026, as the next opportunity to launch the Artemis 2 mission to the Moon.