Stellarium Fast-Neutron Nuclear Reactor

planned

Stellarium is a fourth-generation fast-neutron molten salt reactor designed by French startup Stellaria. It uses liquid chloride salt fuel and operates on a closed fuel cycle, capable of destroying more nuclear waste than it produces. The reactor is compact, occupying just four cubic metres, and can use various nuclear fuels including uranium, plutonium, MOX, minor actinides, and thorium. It is designed for over 20 years of operation without refueling and aims to power AI data centers with clean, autonomous nuclear energy.