American space agency NASA said it fixed one of the RS-25 engines that was supposed to be part of the Artemis II mission, ...

It is business as usual as NASA engineers prepare for an upcoming RS-25 rocket engine test at Stennis Space Center. They are well-versed on all of the pre-test work to be done, having conducted a very ...

Pratt & Whitney Rocketdyne successfully completed a series of Hardware Acceptance Reviews on the first RS-68A production rocket engine, validating the world’s most powerful hydrogen-fueled engine is ...

Aerojet Rocketdyne, an L3Harris Technologies Company, is helping install four of its RS-25 liquid-propellant rocket engines in NASA’s second Space Launch System (SLS) core stage at the agency’s ...