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Here, it is useful to treat the planet as a black body. The Stefan-Boltzmann law states that a black body will have a luminosity $L$ directly related to its temperature $T$ and radius $R$: $$L=4 \p...
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#1: Attribution notice removed
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System
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2020-06-01T14:13:42Z (over 4 years ago)
Source: https://worldbuilding.stackexchange.com/a/8555 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/