US firm’s nuclear power push to overcome solar limits for deep space missions, nears test

Intuitive Machines received an $8.2 million contract extension from the US Air Force to develop compact nuclear power systems that overcome solar power limitations for deep space missions. The technology uses a Stirling-based system that converts heat from radioactive sources into electricity, enabling spacecraft to operate for extended periods beyond solar reach. Following a successful design review, the company will now build flight-ready hardware for testing aboard the International Space Station, potentially demonstrating space-based nuclear power in orbit.