The Secret Physics Inside A Smoke Detector
You have a Nobel Prize-winning experiment over your head right now. One of these clicks is coming from a particle that classical physics says cannot reach the ground. It traveled 10 km, lived 40× longer than it should — and a decade-old experiment just won the 2026 Breakthrough Prize for measuring its secrets.
Brian Keating, cosmologist at UC San Diego, takes apart a $40 Geiger counter and a multi-million-dollar magnet to show they're solving the same problem.
We cover: why a smoke detector is quietly running an alpha-decay experiment over your head, what the weak force is actually doing inside every nucleus, why muons shouldn't survive the trip to Earth — and the one click that breaks classical physics.
Every second, one muon passes through your thumbnail. Most pass straight through your skull.
⏱️ CHAPTERS
00:00 The click that shouldn't exist
01:09 How a tube of gas hears the universe
01:44 The radioactive disc over your head right now
02:30 The heavyweight that paper can stop
03:17 When a neutron becomes a proton
04:58 The nucleus that rings like a bell
06:33 The radiation rewriting your DNA
06:43 Remove every source — it still clicks
07:20 Why this particle can't legally be here
08:28 The free CAT scanner from space
09:52 The crack in the Standard Model
Footage of the muon g-2 experiment courtesy of Fermilab/Dept. of Energy
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