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# The Particle We’ve Been Chasing for 30 Years Might Not Exist
- URL: https://www.cascadepbs.org/show/pbs-space-time/episode/the-particle-weve-been-chasing-for-30-years-might-not-exist-g4xmbo/
- Published: 2026-01-26T20:45:58.000Z
- Updated: 2026-01-26T21:00:16.000Z
- Description: The universe thrums with quantum fields, except something may be missing: the sterile neutrino.
- Author: Cascade PBS Staff
- Tags: PBS Space Time, Season 11, Episode 20, #ZZZ_Episode_0e7ba541-fd15-4ee9-918c-63bc7e52c2f7, #episode, #ZZZ_Show_ae70f836-13b6-4c9d-b61f-99f7b8bc29eb, #v1.16

The universe thrums with quantum fields; and the particles of matter and force emerge as vibrational manifestations of the deep symmetries of these fields. The layers and reflections of those symmetries give us the wonderful richness of what we call the standard model of particle physics. Except there seems to be something missing: the sterile neutrino.