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Karcinogene t1_j6klrbl wrote on January 31, 2023 at 12:04 AM

Reply to comment by mvpilot172 in NASA tested new propulsion tech that could unlock new deep space travel possibilities by Creepy_Toe2680

The thermal nuclear engine has propellant, technically not fuel. It's not combusted, just ejected backwards at high speed. It's gets used up, but it's not a source of energy.