NASA is certainly taking the old adage, "if it ain't broke, don't fix it," to heart. Well, they're not quite fixing a broken engine, but upgrading an existing one. This weekend, a RS-25 engine was brought out of retirement and fired up at the Marshall Space Flight Center's satellite facility, the Stennis Space Center in Mississippi. This first test continues progress on the development of the Space Launch System, which will eventually take the Saturn V's place as the most powerful rocket ever created.
"The RS-25 is the most efficient engine of its type in the world," said Steve Wofford, manager of the SLS Liquid Engines Office at the Marshall Space Flight Center. "It’s got a remarkable history of success and a great experience base that make it a great choice for NASA’s next era of exploration."