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NASA Marshall Fires Up Hybrid Rocket Motor to Prep for Moon Landings https://www.nasa.gov/directorates/esdmd/artemis-campaign-development-division/human-landing-system-program/nasa-marshall-fires-up-hybrid-rocket-motor-to-prep-for-moon-landings/#NASA#HumanLandingSystemProgram#Artemis#HumansInSpace#MarshallSpaceFlightCenter