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First, a back-of-the-envelope calculation: power output of sun / surface area of sphere of radius 1 AU = ~1368 W/m^2 You MUST radiate this much (on average) from every square meter of your sphere...
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First, a back-of-the-envelope calculation: power output of sun / surface area of sphere of radius 1 AU = ~1368 W/m^2 You MUST radiate this much (on average) from every square meter of your sphere...