NASA has awarded a contract to @AerojetRdyne to manufacture 18 additional RS-25 rocket engines to support Artemis missions to the Moon. Each SLS rocket uses four RS-25 engines, providing a total of 2 million pounds of thrust to send SLS to space. MORE >> https://t.co/OIuTQxlPTo

— NASA_SLS (@NASA_SLS) May 1, 2020