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by burnt-resistor 107 days ago
Cool for looking at the Sun, although I think SK was changed to be more specialized towards hunting supernovae. There's also sky surveys like IceCube does. [0]

And for terrestrial sources (geoneutrinos) from natural and artificial sources, there are/were efforts that could detect terrestrial reactors in operation like AGM2015. [1] Irrespective of the current geopolitical instability, I'm surprised that the IAEA doesn't have its own network of geoneutrino detectors to proactively look for proliferation concerns.

0. https://neutrino-map.science/ (ICNO)

1. https://www.nature.com/articles/srep13945 (KamLAND and frmr Borexino)