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

Our #JourneyToMars continues! With Thursday’s successful 7.5-minute hot-fire test of an RS-25 engine, we are one step closer to sending humans to the Red Planet. Four of these engines will power NASA's Space Launch System rocket and NASA’s Orion Spacecraft to deep space destinations, including Mars. Watch the test here: https://youtu.be/bJgsdnpjyes | NASA - National Aeronautics and Space Administration