How to Catch a Ghost Particle: Neutrinos and the 2026 Nobel

Neutrinos are ghost particles: about 65 billion from the Sun pass through your fingernail every second. Here is how IceCube, a cubic kilometre of Antarctic ice, catches them, and why Francis Halzen won the 2026 Nobel Prize in Physics. Wolfgang Pauli predicted the neutrino in 1930 and said nobody could ever detect it. Twenty-six years later it was caught at a nuclear reactor, but the interesting neutrinos from space are far rarer. So physicists hung more than 5,000 light sensors in the ice at the South Pole, and the faint blue Cherenkov flashes they record are now pointing at a blazar and at our own galaxy. Chapters 0:00 Intro: 65 billion neutrinos through your fingernail 0:37 Pauli and the particle nobody could detect 1:30 What is a neutrino? Why it passes through everything 2:10 Why catch neutrinos in Antarctic ice 2:36 From neutrino to muon to blue Cherenkov light 3:53 Inside an IceCube sensor: the photomultiplier 4:26 How IceCube works out where a neutrino came from 4:54 Filtering out the noise: cosmic-ray muons 5:27 Drilling IceCube into the South Pole ice 6:04 What IceCube found: Bert, Ernie, a blazar, the Milky Way 6:54 Halzen and the 2026 Nobel Prize call 7:08 What comes next Sources Nobel Prize in Physics 2026, popular information: https://www.nobelprize.org/prizes/phy... Nobel Prize in Physics 2026, scientific background (Royal Swedish Academy of Sciences): https://www.nobelprize.org/uploads/20... Nobel Prize, interview with Francis Halzen: https://www.nobelprize.org/prizes/phy... Frederick Reines, Nobel lecture 1995: https://www.nobelprize.org/uploads/20... Pauli's 1930 letter (translation, Fermilab / CERN archives): https://fermatslibrary.com/s/the-prop... and https://archives.web.cern.ch/?p=542 IceCube Collaboration, "The IceCube Neutrino Observatory: Instrumentation and Online Systems", JINST 2017: https://arxiv.org/abs/1612.05093 IceCube, neutrinos point to a cosmic-ray accelerator (TXS 0506+056), 2018: https://icecube.wisc.edu/news/press-r... APS Physics, the Milky Way seen in neutrinos, 2023: https://physics.aps.org/articles/v16/115 IceCube, Halzen wins the 2026 Nobel Prize in Physics: https://icecube.wisc.edu/news/awards/... American Institute of Physics, "Halzen's solo Nobel": https://www.aip.org/history/halzen-so... Credits Images: NASA/SDO (AIA); NASA/Apollo 17 crew; NASA/JPL-Caltech/ESA/CXC/STScI; NASA, ESA and the Hubble Heritage Team (STScI/AURA); U.S. Department of Energy / Savannah River Site; U.S. Nuclear Regulatory Commission; Bill Spindler / U.S. Antarctic Program / National Science Foundation. IceCube Laboratory photos: John Hardin, CC BY 4.0 (https://creativecommons.org/licenses/...) Wolfgang Pauli portrait: Bettina Katzenstein / ETH-Bibliothek Zürich, Bildarchiv, CC BY-SA 4.0 (https://creativecommons.org/licenses/...) Banana: robin_24 (Flickr), CC BY 2.0 (https://creativecommons.org/licenses/...) Music: "Wait" by Komiku (CC0) Music: "Musical Mathematics" by Lee Rosevere (https://freemusicarchive.org/music/le...) – licensed under CC BY 4.0 (https://creativecommons.org/licenses/...) Music: "Curiousity" by Lee Rosevere (https://freemusicarchive.org/music/le...) – licensed under CC BY 4.0 (https://creativecommons.org/licenses/...) Music: "Universe Calling" by Lee Rosevere (https://freemusicarchive.org/music/le...) – licensed under CC BY 4.0 (https://creativecommons.org/licenses/...) Sound effects: Kenney.nl and freesound.org (CC0) Narration: synthetic voice. Research, script and animation made by a human-led team (and one hamster). Not affiliated with or endorsed by IceCube, the University of Wisconsin–Madison, the National Science Foundation or the Nobel Foundation. Tiny hamster. Huge questions. Subscribe if you like your science with a straight face: https://www.youtube.com/@ExistentialH... #Neutrino #IceCube #NobelPrize #Physics #GhostParticle #Antarctica #Astrophysics #Astronomy #ScienceExplained