Robert J. Bradbury

Robert J. Bradbury (1956–2011) was a futurist and technology writer best known for originating the idea of the Matrioshka brain, a hypothetical star-powered megastructure composed of nested Dyson-like shells optimized for computation. The concept has since been discussed in scholarly and popular literature on megastructures, astroengineering, and far-future computation.

Career and ideas Bradbury introduced the Matrioshka brain in late 1997 discussions of “Jupiter brains” and developed it into a detailed manuscript by July 1999.

Legacy Bradbury’s Matrioshka brain is widely cited as a canonical megastructure concept in discussions of astronomical engineering and long-term futures, complementing earlier ideas such as the Dyson sphere and Jupiter brain.

Selected works Bradbury, Robert J. “Matrioshka Brains.” Working manuscript (first released 21 July 1999).