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It could be a moon of a class L brown dwarf. Some class L stars are large enough to support hydrogen fusion, and are red dwarfs. But there are many that are of substellar mass, and so are brown d...
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#1: Attribution notice removed
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System
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2021-03-30T23:53:15Z (over 3 years ago)
Source: https://worldbuilding.stackexchange.com/a/33075 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/