Dyson sphere
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A Dyson sphere is a hypothetical megastructure that encompasses a star and captures a large percentage of its power output. The concept is a thought experiment that attempts to imagine how a spacefari
A depiction of a hypothetical Dyson swarm surrounding a star
Freeman Dyson, who explored the concept from a scientific perspective
Matrioshka brain
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A matrioshka brain is a hypothetical megastructure of immense computational capacity powered by a Dyson sphere. It was proposed in 1997 by Robert J. Bradbury. It is an example of a class-B stellar eng
Dyson sphere
…stellar engines, hypothetical megastructures whose purpose is to extract useful energy from a star, sometimes for specific purposes. For example, Matrioshka brains have been proposed to use energy extracted by Dyson spheres for computation, while Shkadov thrusters would extract energy for propulsion. Some proposed…
Matryoshka dolls set in a row