Firing Up the RS-25 Engine Test for Future Artemis Moon Missions Posted on May 21, 2021 by Frank Cisco NASA conducted its fourth RS-25 single-engine hot fire test of the year on May 20, 2021, a continuation of its seven-part test series. via NASA https://ift.tt/3v7P072 Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Like Loading... Related