A Dyson Sphere is the ultimate sci-fi megastructure — an enormous shell or swarm that could harness the entire energy output of a star. But could we ever actually build one? This video dives into the ...

What if we could engineer a gigantic megastructure capable of harvesting every bit of the Sun's energy? Something known as a ...

There are three ways to look for evidence of alien technological civilizations. One is to look out for deliberate attempts by them to communicate their existence, for example, through radio broadcasts ...