Wed, 10/04/2023 - 11:37 Gizmodo NASA is gearing up to start a crucial series of tests on the updated RS-25 engine, which will power the Space Launch System (SLS) rocket for upcoming Artemis missions to the Moon.Read more... Tags NASA, rs 25, aerojet rocketdyne, shuttle, j 2x, rocketry, mike lauer, north american aviation, aerojet rocketdyne holdings, stennis space center, chip ellis, space launch system, Space Shuttle, technology internet, aerojet, artemis program, rocketdyne Source NASA's Upgraded Megarocket Engines Ready to Fire in Critical Tests