Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

"Awards like these are a critical component of our incubator program for future missions, which combines government ...

What does it take to detect a radio signal sent by extraterrestrial life to Earth? Two decades of work involving radio ...

For decades, scientists have tried to turn the question of alien life from late-night speculation into something you can ...

After reviewing almost 30 years of signals, University of California Berkeley researchers have identified 100 mysterious, ...

A new paper posits that advanced alien civilizations may communicate through subtle flashes, like fireflies do on Earth. The ...

A crowd-sourced search for alien intelligence called SETI@Home is in its final stages, analyzing 100 radio signals of ...

As many as 200 worlds beyond our solar system discovered by astronomers may be larger than estimated, which could influence the search for extraterrestrial life. That's the theory of a team of ...

"We inch closer to understanding where life might be possible beyond this planet we call home." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

The Deep Space Network (DSN) is just the sort of tool aliens could one-day detect, transmitting from Earth. Credit: NASA/JPL What if the first signal ever detected from an alien lifeform wasn't a ...