A brief look at neutrino Earth tomography

IceCube, the neutrino detector built to study cosmic neutrinos, can also be used for Earth tomography: tracking how neutrinos pass through the planet reveals information about Earth's internal structure. The hosts compare this to muon tomography, a related technique already used to study volcanoes and to map hidden chambers inside the Khufu pyramid at Giza. They frame this as an example of an expensive scientific instrument finding valuable secondary uses beyond its original purpose.

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   The hosts note they did not cover this specific Earth tomography paper in detail and flag it as a topic they may revisit in a future episode.