Advanced radar scans at Giza Plateau suggest a vast underground network of structures, potentially including a "second Sphinx ...

Researchers studying the treasured architecture of Ancient Egypt say they've found signs of a second Sphinx among scans of an ...

A mysterious star whose repeated bouts of darkening might be due to "alien megastructures," according to some researchers' conjectures, may now have more than a dozen counterparts that display ...

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 ...

Let's just call it the alien megastructure that wasn't. More than 100 researchers have released a study showing that the mysterious star KIC 8462852, better known as Tabby's Star, is almost certainly ...

Back in 2016, headlines all over the world blared with news of a possible "alien megastructure" detected orbiting a distant Milky Way star. Now, a team of Columbia University astrophysicists has ...

Lurking some nine billion light years away from Earth is what appears to be a so-called cosmic megastructure in the shape of an enormous ring. It’s so large that its existence should be impossible, ...

Tabby’s Star is one of the weirdest stars ever found. It flickers and fades over a few days, before flaring back up to its usual brightness in a completely unpredictable pattern. Now astronomers from ...

A megastructure found in the Baltic Sea may represent one of the oldest known hunting structures used in the Stone Age — and could change what’s known about how hunter-gatherers lived around 11,000 ...