(http://bruce.org.uk/images/shuttleengines2.jpg)
The Past, Powering the Future
Six Pratt Whitney Rocketdyne space shuttle main engines sit in test cells inside the Engine Shop at NASA's Kennedy Space Center in Florida.
For the first time, all 15 shuttle main engines are in the shop at the same time, being prepped for shipment to NASA's Stennis Space Center in Mississippi, where they are being repurposed for use on NASA's next generation heavy lift rocket, the Space Launch System.
Courtesy of NASA