Nobel Physics 2026: neutrino astronomy comes of age
Francis Halzen of the University of Wisconsin–Madison won the 2026 Nobel Prize in Physics for leading construction of the IceCube Neutrino Observatory in Antarctica. The cubic-kilometre ice detector captures high-energy neutrinos from astrophysical sources, opening a new observational channel for studying the universe's most energetic objects.
- IceCube uses 5,160 optical sensors embedded in Antarctic ice to detect Cherenkov radiation from neutrinos
- The observatory confirmed that black holes, blazars, and active galactic nuclei accelerate cosmic neutrinos
- Nobel cited Halzen's 'decisive contributions' and the discovery of high-energy astrophysical neutrinos