A computer the size of a star would nest Dyson spheres like Russian dolls
by Ellsworth Toohey from Boing Boing on (#76K62)
In 1997, Robert J. Bradbury proposed the matrioshka brain - a hypothetical megastructure of "immense computational capacity powered by a Dyson sphere." The name comes from matryoshka nesting dolls. The idea: wrap a star in multiple concentric Dyson spheres, each one computing with the waste heat of the sphere inside it. - Read the rest
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