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The answers so far have assumed that the galaxy in question is a spiral galaxy - and if we're talking about the Milky Way, then that's all well and good. But galaxies are pretty diverse, both in sh...
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#1: Attribution notice removed
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System
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2020-06-01T14:13:54Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/102682 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/