Destined for Mars and beyond, NASA’s Space Reactor-1 (SR-1) Freedom will be humanity’s first fission-powered spacecraft to travel outside Earth’s orbit. Announced during NASA’s “Ignition” event, this mission will demonstrate nuclear electric propulsion in deep space, and progress is underway on its ...
NASA’s SR-1 Freedom Advances with Progress on Nuclear Power Module
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October 20, 2026 •
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NASA
