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A planet could definitely have multiple gas layers. As was discussed here, gravity affects different gases differently, based on their mass. In other words, there would be more force between the Ea...
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#1: Attribution notice removed
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System
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2020-06-01T14:13:38Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/2868 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/