Add Yahoo as a preferred source to see more of our stories on Google. (cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be physically ...

So, you want to know about Stellaris megastructures? These gargantuan feats of engineering were first introduced in the first Stellaris DLC - Utopia - and range from habitats and gateways, to more ...

Picture this: You’re the emperor of an advanced alien civilization. For millions of years, your planet’s engineers have been building bigger and better gadgets: supercomputers, spaceships, flying cars ...

A scientist at the University of Glasgow has delved into the possible existence of massive hypothetical energy-harvesting structures called Dyson spheres. In a new study, they showed that both stellar ...

If you’re trying to come up with the best game plan for proving the existence of extraterrestrials, you’ve got plenty of options. Naturally, you want a strategy with a high chance of success, simply ...