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Gravitational instabilities There's actually a second idea for planet formation that's been around for some time (see Kuiper 1951). It requires the nebula hypothesis, like accretion, but it's a to...
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#1: Attribution notice removed
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System
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2020-06-01T14:13:56Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/126131 License name: CC BY-SA 4.0 License URL: https://creativecommons.org/licenses/by-sa/4.0/