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ITER (International Thermonuclear Experimental Reactor)

ITER (International Thermonuclear Experimental Reactor)

International Magnetic Fusion Research Project

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Fusion reactors as dark matter laboratories

New Capabilities

Under construction in southern France, 90% complete

Fusion reactors might crack open the dark matter mystery without trying. University of Cincinnati physicist Jure Zupan and colleagues at Fermilab, MIT, and Technion just published a breakthrough showing how neutrons slamming into reactor walls could spawn axionsโ€”the hypothetical particles that may explain the 27% of the universe we can't see. The twist: we're already building these reactors for clean energy.

Updated Dec 29, 2025