Cosmic Megastructures - Could We Build a Dyson Sphere? - Popular Mechanics
▻http://www.popularmechanics.com/science/space/deep/could-we-build-a-dyson-sphere-17110415
A Dyson Swarm consists of thousands of relatively small mirrors or solar panels in an array of orbits around the sun. Like a dense cloud of bees buzzing around a hive, a Dyson Swarm largely shrouds the sun from external view, capturing most of the available solar energy.