Searching for extraterrestrial intelligence has so far primarily meant focusing on one particular type of signal—and that ...

Researchers are zeroing in on more deliberate “narrow-band” alien signals, well outside the radio frequencies SETI has ...

What would aliens actually look like? While simple life forms like bacteria may be common in the universe, complex ...

Sometimes, "unidentified" means just what it sounds like.

Astronomers may have been listening for alien civilizations in only a small slice of the radio spectrum while overlooking a largely unexplored range of higher frequencies. Using archived data from the ...

Astronomers might be hunting for alien signals in all the wrong places. A new ...

(cokada/iStock/Getty Images Plus) Last June, while most of us were sweating it out and scrolling socials, more than two dozen ...

Yet the key insight lies not in what was found, but in what the analysis revealed about the scale of previous searches.

Most alien-signal searches listen to a narrow part of the radio spectrum, but astronomers are now testing higher frequencies that have barely been explored. A first search using archived ALMA ...

They’re hole-ar powered. If super-advanced alien civilizations exist, they would surely require insane amounts of energy to ...

Scientists Have a Plan for the Day We Discover Alien Life. Here's What's In It ...