https://hackerpaper.kaipfister.de/p/1409.4918/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=12192828urn:hackerpapers:mention:1409.4918:12192828Sat, 30 Jul 2016 13:13:02 GMT<p>Nah, the second derivative of the scale factor in the second Friedmann equation (https://en.wikipedia.org/wiki/Friedmann_equations?oldformat=...) is still determined by energy-density (rho) and pressure (p). &quot;p&quot;, pressure, is equal to w \rho c^2, where w is a small negative number close to 0 (about -1/3 is a good fit for observation). Galaxies stars and atoms won&#x27;t be ripped apart; instead you&#x27;ll get these and structures mostly collapsing into supermassive black holes which occupy their own Hubble volumes (stray ejected stars and gas molecules will also eventually occupy their own Hubble…</p><p><a href="https://hackerpaper.kaipfister.de/p/1409.4918/">Paper and discussion history</a>. A mention is not an endorsement.</p>gr-qc