During a hot-fire test of the RS-25D engine in August 2013. Credit: nasamarshall/Flickr, CC BY-NC 2.0
During a hot-fire test of the RS-25D engine in August 2013. Credit: nasamarshall/Flickr, CC BY-NC 2.0
During a hot-fire test of the RS-25D engine in August 2013. Credit: nasamarshall/Flickr, CC BY-NC 2.0
