Launching NASA's Space Launch System rocket to the Moon and Mars will require a lot of 🔥power. Get to know the A-B-C's of the RS-25 engine that will help make it happen! Watch one of its last engine tests at ~3:45 p.m. EDT before being flight certified: http://www.nasa.gov/live | NASA - National Aeronautics and Space Administration

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