Experts believe ancient alien civilizations have been living on mars. See more in this clip from Season 1, Episode 7, ...

What if aliens were building a massive power plant?Last time, I talked about the "Kardashev scale," which classifies the ...

Add Yahoo as a preferred source to see more of our stories on Google. Distance, light speed, biology, and time may explain why alien civilizations never meet. (CREDIT: Wikimedia / CC BY-SA 4.0) "There ...

Intelligent alien life has remained elusive despite decades of searching the skies, but new technologies and ideas are ...

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 ...

For decades, science fiction writers have tried their best to prepare us for eventual contact with aliens. Their efforts are dominated by several recurrent tropes. There's the invasion by a warlike ...

Cooperation between Russia and the United States in the field of scientific search for extraterrestrial life and alien ...

We’ve likely had at least one close encounter of the 3I kind before. Harvard scientist Avi Loeb claims that not only does 3I/ATLAS potentially have alien origins, but that this wouldn’t be the first ...

In 1950, famed astrophysicist Enrico Fermi posed a profound question during a casual lunch with colleagues: Where is everybody? In other words, if there’s an extremely high probability that advanced ...

Despite the alien hubbub and hoopla of the past few years, we still don’t know for certain if we are alone in the universe. We haven’t even found the tiniest scrap of evidence to suggest that there ...

Suppose an alien civilization discovers Earth and decides to investigate. Before it chooses a landing site or considers how ...

For decades, SETI researchers have focused on finding narrow-band radio signals that might stand out from the natural universe. But what if an advanced civilization that wanted to communicate would ...