RS-25 engines powering NASA's SLS (Space Launch System) rocket use liquid oxygen and liquid hydrogen as propellants – the same elements that combine to create water (H2O). For an RS-25 engine test, liquid hydrogen and liquid oxygen are mixed in the engine combustion chamber and ignited, which results in extremely high-temperature exhaust (up to 6,000 degrees F) exiting the nozzle into the flame deflector at a very high rate and pressure. Hundreds of thousands of gallons of water also are flowing

394K views · 1.3K shares | Today we successfully tested one of the four RS-25 engines that will power NASA's Space Launch System (SLS) rocket to deep space destinations, like Mars. This 500-second hot fire engine test marks another step toward the nation’s return to human deep-space exploration missions. Watch and learn more: https://nasa.tumblr.com/post/164801065084/today-we-successfully-tested-one-of-our-rs-25 | NASA - National Aeronautics and Space Administration | Facebook

132K views · 760 shares | Got a minute? ⏱️ Our ‘Rocket Science in 60 seconds’ videos give you a quick #NASAatHome-style rundown of our Moon-bound rocket, NASA's Space Launch System -- the most powerful ever built: https://go.nasa.gov/2zFcd8T | NASA - National Aeronautics and Space Administration | Facebook

501K views · 10K reactions | NASA's Space Launch System (SLS) megarocket roars to life again!  In its second test of 2024, the RS-25 engine fired for eight minutes at Stennis Space Center, advancing moon mission technology. The tests, preparing for Artemis 5 in 2029, focus on certifying the RS-25 for more powerful missions. Exciting steps toward lunar exploration! ️ | National Space Society | Facebook