Advanced alien civilizations may communicate via a series of flashing lights, similar to how fireflies do, a new paper hints. This would potentially make extraterrestrials much harder to spot if we ...

Is anybody out there? Probably. Most stars have planets; we've discovered more than 6,000 exoplanets thus far, and the most basic statistics point toward the existence of countless potentially ...

A nihilistic alien civilization sounds like one that would simply lose hope, abandon progress, and fade away. But this ...

Life on Earth may exist thanks to an incredible stroke of luck — a chemical sweet spot that most planets miss during their formation but ours managed to hit. The key to solving the mystery of the ...

Add Yahoo as a preferred source to see more of our stories on Google. Collage of a telescope under a starry sky and a planet in space. Earthlings, brace yourselves: the galaxy may be emptier than your ...

There’s no denying the allure of alien artifacts. Science fiction is awash in the material remnants of extraterrestrial civilizations, which surface in everything from the classic books of Arthur C.

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

Add Yahoo as a preferred source to see more of our stories on Google. Could there be a technologically advanced extraterrestrial society hiding in NGC 604, a star-forming region of the Triangulum ...

If so, why haven’t they said hello? The humble residents of this pale blue dot have been on a quest to find an alien civilisation for more than a century. First, it was the “canals” of Mars. Then ...

After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA's WISE orbiting observatory has found no evidence of advanced ...

(via Cool Worlds) What is the most realistic way we'll detect an alien civilization? If the history of science and astronomy is any guide, there is a clear answer: The Eschatian Hypothesis.