https://hackerpaper.kaipfister.de/p/1104.4362/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=12635764urn:hackerpapers:mention:1104.4362:12635764Tue, 04 Oct 2016 14:27:38 GMT<p>Blackhole starlifting makes more sense to me than Dyson spheres (see section on star lifting): https://arxiv.org/abs/1104.4362 &gt; Importantly, researchers have concluded that a thin accretion disk around a rotating black hole is the most efficient power source in the universe , a process up to ~50 times more efficient than nuclear fusion occurring in stars (e.g. Thorne 1974; Narayan and Quataert 2005). If any civilization is to climb the Kardashev scale, it would certainly at some point want to master that energetic source. We call such an endeavor black hole star lifting Instead of a Dyson…</p><p><a href="https://hackerpaper.kaipfister.de/p/1104.4362/">Paper and discussion history</a>. A mention is not an endorsement.</p>physics.gen-ph