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

NASA has been conducting a series of hot fire tests to certify RS-25 engines for use on the Space Launch System rockets that ...

Components for the next test series that will help certify design changes and modernization of manufacturing techniques are already assembled on a development engine at the Stennis Space Center in ...

17 with a full-duration hot fire of the RS-25 engine on the Fred Haise Test Stand at NASA's Stennis Space Center near Bay St. Louis, Mississippi. Data collected from the test series will be used ...

Hot-fire tests of new RS-25 engine components will resume in 2021 to certify a new manufacturing process during production. Over one hour of engine run-time is planned for the Retrofit 2 series to ...