Sphereworld, Dyson Sphere

Using incredibly strong materials similar to those in a ringworld, and adding gravity generators where necessary for strength and comfort, a spherical shell could be built to completely enclose a star.

Such a shell would then trap all stellar radiation for use by the civilization. With a radius of 149 million kilometers (about 93 million miles), the internal surface area would equal about one billion Earths.

First posulated by Terran scientist Freeman Dyson prior to contact with the Vilani, no extant examples of a sphereworld are known to exist.

Also see planetoid, rosette, ringworld.

(BOOK-3: p9, 1105; mine, 1120)

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