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Originally shared by +NASA
Miss the 535-second long RS-25 engine test? Here's a quick recap of the test firing of the engine that will power NASA's Space Launch System on our #JourneyToMars. Data collected during the test will aid in adapting the former space shuttle engines to the new SLS vehicle mission requirements, including development of an all-new engine controller and software.
Learn more about SLS: http://www.nasa.gov/sls