At 3:40 pm ET, we'll fire up one of the four RS-25 engines for NASA's Space Launch System, our rocket built for deep-space missions to the Moon and Mars. Today's test features an RS-25 flight controller set for use on an actual mission, engine components made with innovative manufacturing, and plenty of 🔥🔥🔥 and 💨💨💨. Watch: https://www.nasa.gov/live | NASA - National Aeronautics and Space Administration

Now that’s power! The four RS-25 engines on #NASASLS are some of the most efficient engines ever built and provide more than 2 million pounds of thrust to help launch the rocket, NASA’s Orion Spacecraft and its crew to the Moon as part of the agency's #Artemis missions. Michoud is tasked with manufacturing and assembling the NASA's Space Launch System space core stage. The main propulsion system will also be assembled and integrated here, including the RS-25 engines. Learn more about the power b

NASA’s RS-25 rocket engine firing during a ground test at Stennis Space Center. As the engine roars to life, sunlight passes through water vapor and steam used to cool the test stand—creating a natural rainbow around the exhaust plume. The RS-25 is the powerhouse engine that once flew on the Space Shuttle and now powers NASA’s Space Launch System (SLS) for future Artemis missions to the Moon and beyond. Science, power, and beauty—all in one frame. 🌍✨ Video credit: NASA #NASA #RS25 #RocketEngine