STOCKHOLM, Sweden | October 6, 2026 | Belgian-American physicist Francis Halzen has won the 2026 Nobel Prize in Physics for his pioneering work in detecting high-energy neutrinos, elusive subatomic particles that provide scientists with a new way to investigate some of the universe’s most extreme and distant phenomena.
Halzen, 82, a professor at the University of Wisconsin-Madison, was recognized for conceiving and leading the development of the IceCube Neutrino Observatory at the South Pole in Antarctica. The facility uses more than 5,000 light sensors embedded deep in a cubic kilometer of Antarctic ice to detect faint flashes produced when neutrinos interact with matter, according to Reuters and the Associated Press.
Neutrinos are often called “ghost particles” because they have no electric charge and interact so rarely with other matter that trillions can pass through the human body without causing noticeable effects. Their ability to travel vast distances with little interference makes them valuable messengers of cosmic events, including exploding stars and processes associated with black holes.
Halzen proposed using polar ice to detect high-energy neutrinos in 1988. The idea eventually led to the construction of IceCube, which began full scientific operations in 2011. In 2013, researchers announced strong evidence that the observatory had detected neutrinos originating beyond Earth’s atmosphere, opening a new avenue for studying the universe. The project built on decades of research into neutrino detection and earlier experiments that tested the use of ice as a natural detector.
Unlike conventional telescopes that observe light, IceCube can investigate cosmic phenomena through particles that travel from their sources across space. Scientists can analyze the light generated by neutrino interactions to estimate the particles’ direction and energy, helping identify the distant astrophysical events that produced them.
The discovery of neutrinos dates back to 1930, when physicist Wolfgang Pauli proposed the existence of a previously undetected particle to explain missing energy in radioactive decay. Their existence was experimentally confirmed in 1956 by physicists Clyde Cowan and Frederick Reines. Subsequent discoveries established neutrinos as an important subject in particle physics, eventually paving the way for large-scale observatories such as IceCube.
Halzen’s Nobel recognition highlights the growing importance of neutrino astronomy, which complements traditional observations using visible light, radio waves and other forms of radiation. Researchers hope that continued observations will help explain how the universe’s most energetic particles are produced and where they originate.
The Nobel Prize in Physics carries an award of 12 million Swedish kronor. IceCube’s international scientific collaboration continues to analyze data from the Antarctic observatory, with further research expected to expand scientists’ understanding of the cosmos.
Si Venus L Peñaflor ay naging editor-in-chief ng Newsworld, isang lokal na pahayagan ng Laguna. Publisher din siya ng Daystar Gazette at Tutubi News Magazine. Siya ay isa ring pintor at doll face designer ng Ninay Dolls, ang unang Manikang Pilipino. Kasali siya sa DesignCrowd sa rank na #305 sa 640,000 graphic designers sa buong daigdig. Kasama din siya sa unang Local TV Broadcast sa Laguna na Beyond Manila. Aktibong kasapi siya ng San Pablo Jaycees Senate bilang isang JCI Senator.
- Venus L Peñaflor
- Venus L Peñaflor
- Venus L Peñaflor
- Venus L Peñaflor
