Dyson Sphere
  • Sphere postulated by US physicist Freeman Dyson (born 1923 in England) which would be made by dismembering planets and reassembling their material in a sphere around a star to capture all its radiation output. A Dyson Sphere would be the ultimate in energy conservation. From the outside an observer would see only a weak infra-red emission as a sign of the presence of a star and a surface-dwelling civilisation on the interior of the sphere.

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