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On October 6, 2026, the Royal Swedish Academy of Sciences announced the winner of the 2026 Nobel Prize in Physics. The award went to Francis Halzen, recognizing his decisive contributions to the IceCube Neutrino Observatory and the discovery of high-energy neutrinos from astrophysical sources. Halzen, a Belgian-American physicist, proposed the IceCube project in 1988 and led a team to build detectors in the Antarctic ice. The observatory was officially completed at the end of 2011. Using this facility, the research team has captured high-energy cosmic neutrinos and, for the first time, pinpointed the celestial sources of these particles, opening a new window into the universe.

Neutrinos, also called ‘ghost particles,’ barely interact with matter and can carry information from extreme objects like black holes and supernovae. The IceCube project allows humans to explore the universe not just through light. This challenging experiment’s achievements have helped scientists better understand the distant universe and deepen humanity’s knowledge of the cosmos.