Francis Louis Halzen is a Belgian-American particle physicist and Nobel laureate. He is the Hilldale and Gregory Breit Distinguished Professor at the University of Wisconsin–Madison and Director of its Institute for Elementary Particle Physics. Halzen is the Principal Investigator of the IceCube Neutrino Observatory at the Amundsen–Scott South Pole Station in Antarctica, the world's largest neutrino detector which has been operational since 2010. The Nobel Prize in Physics 2026, announced October 6, 2026. Francis Halzen, “for decisive contributions to the IceCube Neutrino Observatory and the discovery of high-energy neutrinos of astrophysical origin”. Francis Halzen: born 1944, Tienen, Belgium. Wiki link Data: the Nobel Foundation (CC0).