NASA has completed its first full-scale nuclear rocket reactor tests since the 1960s, marking a major milestone for deep-space propulsion. More than 100 cold-flow tests validated hydrogen flow and system stability. Nuclear thermal rockets could significantly reduce travel time, radiation exposure, and payload constraints for future Moon and Mars missions.NASA has completed its first full-scale nuclear rocket reactor tests since the 1960s, marking a major milestone for deep-space propulsion. More than 100 cold-flow tests validated hydrogen flow and system stability. Nuclear thermal rockets could significantly reduce travel time, radiation exposure, and payload constraints for future Moon and Mars missions.
