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Dyson Spheres and Halo Rings

According to Wikipedia

A Dyson sphere is a hypothetical megastructure originally described by Freeman Dyson. Such a "sphere" would be a system of orbiting solar power satellites meant to completely encompass a star and capture most or all of its energy output. Dyson speculated that such structures would be the logical consequence of the long-term survival and escalating energy needs of a technological civilization, and proposed that searching for evidence of the existence of such structures might lead to the detection of advanced intelligent extraterrestrial life.

Halo - Stanford Torus

The space rings, or ring worlds made popular by the Halotm video game series are another example of a hypothetical megastructure.

I fully support the construction of a large-scale orbital space ring built around planet earth. In fact in some ways I believe this step should come before we even think of building a moon base. Although I do suggest we send sand-bagger construction drones to the moon in the meantime to build the foundations for future moon bases.

Freeman Dyson

Freeman John Dyson FRS (born December 15, 1923) is a British-born American theoretical physicist and mathematician, famous for his work in quantum electrodynamics, solid-state physics, astronomy and nuclear engineering. Dyson is a member of the Board of Sponsors of the Bulletin of the Atomic Scientists. Dyson has lived in Princeton, New Jersey, for over fifty years.