From gravity-defying cities to sky-high pyramids, explore the world’s most ambitious megastructures that were never built.

Dive into the depths of our planet as we explore the astonishing megastructures hidden within Earth. What secrets do they hold, and why is no one discussing these incredible discoveries? Join us on ...

Dyson sphere stability — once considered an impossible physics problem — may be within reach. A peer-reviewed paper in ...

The latest finding from NASA's planet-hunting space telescope, Kepler, has scientists talking -- and they're stumped. "We've ruled out the usual suspects and are scratching our heads and can't figure ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. It might be evidence of aliens building gigantic structures around ...

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 ...

Astronomers may be able to identify possible Dyson swarms by looking for unusually cold, clean infrared signals around ...

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 ...