Giant Leap ForwardTesting 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.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/giant-leap-forward/Copy URL to clipboard> DownloadShareSize946x926px