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

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

Fresh scientific findings highlight two major gaps in the hunt for alien life.

One of the challenges of searching for technosignatures (i.e., signs that intelligent life somewhere in the universe has ...

Experts stress need for transparency while aiming to prevent premature announcements and protect scientists ...

The Fermi paradox asks why we haven’t found aliens yet. Scientists say the answer may lie in timing, technology, and the vast scale of space.

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

It may not breathe, eat, or sleep. It may not reproduce in any ordinary sense. It may not have a face, a voice, or a body shaped by evolution. It may be a machine. This is not a wild idea – it follows ...

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 ...

A provocative theory circulating among artificial intelligence researchers suggests that once machines achieve human-level intelligence and beyond, they might create something entirely unexpected: a ...

Where are all the aliens? No, I don’t mean microbes on Mars or creatures swimming beneath the ice crusts of Europa or Enceladus, but honest-to-God intelligent aliens, capable of space travel? The ...