In the 1960s, physicist Freeman Dyson proposed that advanced alien civilizations could be building out enormous ...

This sphere would enclose a star, providing billions of planets' worth of surface area and capturing vast amounts of solar energy. Dyson calculated that a shell made from a planet with the mass of ...

Dyson spheres, the hypothetical mega-structures that advanced alien civilizations might use to enclose a star and harness its energy, suffer from a fatal flaw: They are catastrophically unstable ...

This discovery opens new perspectives in the search for advanced extraterrestrial civilizations. Freeman Dyson imagined in the 1960s a sphere enclosing a star to capture all its energy. However, such ...