NASA took another big step on the path to propel our astronauts back to deep space and ultimately on to Mars with the long awaited decision to formally restart production of the venerable RS-25 engine that will power the first stage of the agency’s mammoth Space Launch System (SLS) heavy lift rocket, currently under development. … Continue reading "NASA Awards Contract to Aerojet Rocketdyne to Restart RS-25 Engine Production for SLS Mars Rocket"