Francis Halzen wins Nobel physics prize for Antarctic 'ghost particle' hunt
Belgian-American physicist Francis Halzen, 82, of the University of Wisconsin–Madison, won the 2026 physics Nobel for realizing that a cubic kilometre of South Pole ice could serve as a neutrino detector — the IceCube observatory, buried up to 2,500 metres deep. Its rare catches of high-energy neutrinos carry information from exploding stars and distant galaxies that light cannot.