![RS-25 engine](https://www.nasa.gov/wp-content/uploads/2023/03/s14-113-ssc-2014-00717-rs-25_engine.jpg)
Giant Leap Forward
Testing of the rocket engines for NASA's new Space Launch System (SLS) took another giant leap forward Oct. 24 with the RS-25 engine and its new engine controller unit in place on the A-1 Test Stand at Stennis Space Center.
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https://www.nasa.gov/image-detail/giant-leap-forward/
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