More space news and info at: http://www.coconutsciencelab.com - in a July 17, 2015 test of a Space Launch System (SLS) RS-25 rocket engine at NASA's Stennis Space Center, operators conducted a 535-second firing, in a range of power levels, including a period at 109 percent of the engine’s rated power.

Data collected on performance of the engine at the various power levels will aid in adapting the former space shuttle engines to the new SLS vehicle mission requirements.

Four RS-25 engines will use the modified engines to help power the SLS core stage during launch.

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