Topic
The study of the universe through neutrinos, nearly massless particles detected by large underwater or under-ice instruments.
Peter Hegemann, Georg Nagel and Karl Deisseroth won this year's medicine Nobel for optogenetics, which uses light to switch on chosen neurons. With it, researchers can switch on one circuit and see whether a behavior follows, a direct test of cause.
Reality
Francis Halzen, who leads the IceCube observatory at the South Pole, won the 2026 physics Nobel for detecting high-energy neutrinos from astrophysical sources. The committee's citation names the observatory alongside the discovery, so the instrument in the Antarctic ice is part of what the prize honours.
Perspective Coverage
19 publishersReality
Francis Halzen won the 2026 physics Nobel for IceCube, a cubic kilometre of South Pole ice that caught neutrinos from beyond the solar system. Earlier neutrino prizes stopped at the Sun. This one rewards pointing the particle at the wider sky.
Reality
Nobel physics laureate Francis Halzen said he proposed neural nets for physics data in 1991 and credits them with finally showing IceCube the Milky Way. His account links an idea he says took decades to mature to one of the Antarctic detector's best-known results.
Reality
Dieter Lüst and co-authors argue KM3NeT's record neutrino, about 35 times more energetic than any before, came from a black hole exploding in a fifth dimension. The idea explains the missing photons but rests on one detection and an unproven extra dimension.
Reality