Sphere - Wikipedia
internal consistency - What reason would an alien civilization have for building a Dyson Sphere (or Swarm) if cheap Nuclear fusion is available? - Worldbuilding Stack Exchange
File:Dyson Swarm.png - Wikipedia
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File:SphereC60.jpg - Wikipedia
File:Dyson Sphere Diagram.png - Wikipedia
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☆ Dyson Sphere : Way of becoming... - Cosmic Chronology | Facebook
