Real Dyson spheres? How alien megastructures might survive in space, study explores

University of Glasgow Professor Colin McInnes developed mathematical models showing that massive hypothetical alien energy-harvesting structures called Dyson spheres could achieve gravitational stability around distant stars. His research demonstrates that stellar engines using reflective disks need strategic mass distribution with outer ring support to remain stable, while Dyson bubbles require large swarms of low-mass reflectors to function without constant maintenance, potentially helping scientists identify signs of advanced extraterrestrial civilizations.