Video and Image Credit & Copyright: NASA.
On January 9, 2015 NASA’s Space Launch System (SLS) reached another key milestone as the Aerojet-Rocketdyne RS-25 engine that will power the post powerful rocket in history made its first successful test on the historic A-1 Test Stand at Stennis Space Center, Mississippi firing at full power for 500 seconds.
Stennis Space Center: http://www.nasa.gov/centers/stennis/home/
NASA Space Launch System (SLS): http://www.nasa.gov/exploration/systems/sls/
NASA page for the RS-25 Engine: http://www.nasa.gov/exploration/systems/sls/rs25-engine-powers-sls.html
Aerojet-Rocketdyne RS-25 Engine: http://www.rocket.com/rs-25-engine