It turns out neutrinos are born not in bright jets, but in a hot 'corona' around a black hole — like the Sun's, only a billion times hotter. Such coronas can explain almost the entire stream of particles caught by the IceCube Observatory.
🎯 To stop a neutrino, you'd need a lead shield one light-year thick — but even that's no guarantee.
🎬 In science fiction, neutrinos are the ideal courier through planets; in reality, they bring news from the blazing coronas of black holes.