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,

The Artemis II mission has completed a critical engine burn that's propelling the Orion spacecraft and its four astronauts on a journey to the far side of the Moon.

"We forgot how beautiful it is to look down on Earth", said astronaut Reid Wiseman, the mission commander.