Thursday, January 29, 2026

NASA Fires Up Nuclear Future for Deep Space Travel

Engineers install a flight reactor engineering development unit into Test Stand 400 in preparation for cold flow testing (Credit : NASA/Adam Butt)

NASA has completed its first major testing of nuclear reactor hardware for spacecraft propulsion in over 50 years, marking a crucial step toward faster, more capable deep space missions. Engineers at Marshall Space Flight Center conducted more than 100 ‘cold flow’ tests on a full scale reactor engineering development unit throughout 2025, gathering vital data on how propellant flows through the system under various conditions.



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