Assertion: sphere's surface | /r/CapableOf | receive same amount of sunlight
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text: A spherical shell Dyson sphere in the Solar System with a radius of one astronomical unit, so that the interior surface would receive the same amount of sunlight as Earth does per unit solid angle, would have a surface area of approximately 2.8×1017 km2 (1.1×1017 sq mi), or about 550 million times the surface area of Earth.