If Betelgeuse decides to go supernova, the first warning sign will be a blast of neutrinos. Good thing we now have real-time neutrino detectors running (and you can watch them online, like a cosmic-ray webcam). https://t.co/oZeY28Of8l pic.twitter.com/iZw49xaLV7

— Corey S. Powell (@coreyspowell) January 14, 2020