https://hackerpaper.kaipfister.de/p/quant-ph_0407115/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=31149958urn:hackerpapers:mention:quant-ph_0407115:31149958Mon, 25 Apr 2022 01:33:39 GMT<p>Primordial black holes may be floating around, but they are very unlikely to be any to be closer to Earth than stellar black holes, given the kinematic evidence. (There could be faint hope for an isolated one of a fairly small handful within the Milky Way. FWIW, I don&#x27;t think there are small PBHs. There might be gargantuan ones in the universe. There definitely isn&#x27;t one of those hiding in our galaxy though, but maybe in our galaxy cluster near the centre of mass, wherever that is (millions of light years away, at least). There are some huge central black holes in some local galaxies that may…</p><p><a href="https://hackerpaper.kaipfister.de/p/quant-ph_0407115/">Paper and discussion history</a>. A mention is not an endorsement.</p>quant-ph