https://hackerpaper.kaipfister.de/p/1209.3339/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=8072071urn:hackerpapers:mention:1209.3339:8072071Tue, 22 Jul 2014 23:02:01 GMT<p>Because of the motion of the Earth relative to the galaxy. Our Solar System is in orbit around the galaxy, and thus traveling at considerable speed (200 km/s or so) around the galactic center. The dark matter halo of the Milky Way, however, does not travel in the same way, so there is a persistent relative velocity between the Earth and dark matter (the WIMP cloud), this is called the &quot;WIMP wind&quot;. However, the Earth itself orbits our Sun in a circular motion, which causes it&#x27;s velocity relative to the Sun and the overall Solar System to change from about 30 km/s in one direction to 30 km/s in…</p><p><a href="https://hackerpaper.kaipfister.de/p/1209.3339/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph.CO