https://hackerpaper.kaipfister.de/p/1712.00437/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=18200591urn:hackerpapers:mention:1712.00437:18200591Fri, 12 Oct 2018 11:06:32 GMT<p>It&#x27;s maybe worth pointing out the tumbling is a hypothesis used to explain variable brightness measurements and not something that was observed directly. https://arxiv.org/pdf/1712.00437.pdf For all anyone knows the intrinsic brightness was variable. (This is probably not very likely without some supporting spectroscopic anomalies. But still.) As for thrusters - that&#x27;s the same problem as the comet and outgassing hypothesis. No known mechanism can explain the acceleration. And if you were alien race and wanted to look at a planetary system without attracting attention, something that looks…</p><p><a href="https://hackerpaper.kaipfister.de/p/1712.00437/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph.EP