A Dyson Sphere is a hypothetical structure that surrounds a star to capture its energy output. Proposed by physicist Freeman Dyson in 1960, this concept suggests that advanced civilizations could harness vast amounts of energy by building a shell or swarm of satellites around their star. There are different designs for a Dyson Sphere, including a solid shell or a collection of orbiting solar collectors. The idea is that such a structure would provide an immense energy supply, potentially supporting the needs of a highly advanced civilization and allowing for significant technological advancements.