Rocket Engines That Flew 22 Space Shuttle Missions Are Ready for NASA’s Next Moon Mission
NASA’s Space Launch System (SLS) is ready to fly with its four shuttle-era engines. The rocket, outfitted with the RS-25 engines, recently passed a critical milestone that put the integrated system to the test, using a decades-old design on a new launch vehicle. NASA teams successfully completed the RS-25 engine checkout tests at the Kennedy Space Center in Florida, ensuring seamless communication between the SLS core stage and its engines ahead of the first crewed mission to the lunar environm