The structure is only the sixth of its kind to ever be found.

A story that went viral this week reports that astronomers finally found E.T., but those aren't the facts. CNET's Eric Mack talks with the astronomers involved about what is still a very interesting ...

(cokada/iStock/Getty Images) Alien megastructures built to harvest stellar energy or alter the orbits of stars may be physically feasible, according to a new analysis – satisfying both our sci-fi ...

The world was electrified last year when it was suggested that scientists had spotted an “alien megastructure” orbiting a distant star. Now a space boffin has suggested huge extraterrestrial ...

Some day in the far future, it’s possible our descendants will kick it up a notch and wrap the entire Sun in a massive solar-collecting shell known as a Dyson Sphere. It’s also possible that some ...

In the classic 1937 sci-fi novel "Star Maker," author Olaf Stapledon imagined a massive machine that could encompass an entire star, capturing its energy and harnessing it to provide near unlimited ...

Throughout the 1960s and ’70s, starry-eyed architects set their minds to megastructures – massive, multi-purpose designs that could house communities or even entire cities. Complex and expensive to ...