On July 25, NASA tested one of its RS-25 engines. The RS-25 engine isn't just any engine — it's a rocket engine that will launch the most powerful rocket in history — the Space Launch System ...

Restart of RS-25 rocket engine production is ramping up at prime contractor Aerojet Rocketdyne’s Canoga Park facility in the Los Angeles area. Components for the next test series that will help ...

“Most rocket engines don’t come back,” said ... As post-flight data reviews continue on the first set of SLS RS-25 engines, preparations to install the four RS-25s onto the Core Stage ...

Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

The folks over at NASA have just the upgrade for you. This thing packs heat with four RS-25 rocket engines and a pair of rocket boosters for that extra holiday glow. Just be sure to keep an eye on ...

NASA completed a full-duration, 500-second hot fire of an RS-25 certification engine Jan. 17, continuing a critical test series to support future SLS (Space Launch System) missions to the moon and ...

The new rocket will use retrofitted space shuttle engines to send people to the moon, Mars, and beyond. NASA recently test-fired one modified RS-25 space shuttle engine at "113% thrust" to observe ...