https://hackerpaper.kaipfister.de/p/hep-ex_9807003/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=48682426urn:hackerpapers:mention:hep-ex_9807003:48682426Fri, 26 Jun 2026 04:47:27 GMT<p>In 1987 a supernova was observed in the sky. In a great coincidence, just months after being put into operation, a new type of detector meant to study if protons are stable, detected instead the neutrinos coming from the supernova in a way that could be individually timestamped. No other supernova has been visible with the naked eye ever since, or is likely to be seen in our lifetimes. https://sci-hub.st/10.1103/PhysRevLett.58.1494 The neutrinos arrived 3 hours before the supernova was first seen in the sky. This could mean that neutrinos travel faster than light: that they negative mass. It…</p><p><a href="https://hackerpaper.kaipfister.de/p/hep-ex_9807003/">Paper and discussion history</a>. A mention is not an endorsement.</p>hep-ex