RS-25 has another test

STENNIS SPACE CENTER, Miss. – An RS-25 rocket engine had a 535-second test firing today at NASA's South Mississippi rocket engine test facility. More than 1,200 people viewed the test. One final test of this RS-25 developmental engine is planned in this series. Testing of flight engines begins later this fall. Four RS-25 engines along with boosters will power the first stage of NASA's Space Launch System, which will launch the Orion crew vehicle and astronauts on deep space missions. The RS-25 is a modified version of the engines that powered the Space Shuttle. (Source: NASA/SSC, 08/13/15)