That boggles my mind, do you have any sources I can read to start digging into o... | Hacker News

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		sosuke on March 14, 2018 \| parent \| context \| favorite \| on: All disk galaxies rotate once every billion years:... That boggles my mind, do you have any sources I can read to start digging into on this? Not sure why a question like this would be voted down but my own searches have only turned up articles about galaxies spinning in the same direction. Someone else commented with some clarification. https://news.ycombinator.com/item?id=16586901

drdebug on March 14, 2018 [–]

Ok, my mind is boggled too... Anything we can read on the topic ?

Retra on March 14, 2018 | [–]

What topic? Basic geometry?

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