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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/1406.4860/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/1406.4860/feed.xml" rel="self" type="application/rss+xml" /><item><title>Galaxies as simple dynamical systems: observational data disfavor dark matter and stochastic star formation — mentioned by pdonis</title><link>https://news.ycombinator.com/item?id=32420467</link><guid isPermaLink="false">urn:hackerpapers:mention:1406.4860:32420467</guid><pubDate>Thu, 11 Aug 2022 01:16:50 GMT</pubDate><description>&lt;p&gt;&amp;gt; This is the same shtick from from a known anti-DM guy. Whether it&amp;#x27;s a &amp;quot;shtick&amp;quot; or not, his basic point seems like one that is worthy of some kind of substantive counter argument, if one exists. His basic point is that small galaxies orbiting larger galaxies should experience Chandrasekhar dynamical friction if dark matter exists, but no such thing is observed. Therefore dark matter cannot exist. Has any astrophysicist who supports the dark matter hypothesis published a counter argument to this? Edit: A published paper of Kroupa&amp;#x27;s that gives much more detail about his point is here…&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/1406.4860/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>astro-ph.GA</category></item></channel></rss>
