It is unclear whether a [3I/ATLAS] would transmit radio signals … such signals would take tens of thousands of years to cross ...

Scientists used the 100-metre Green Bank Telescope to look for alien signals but detected no radio signals from 3I/ATLAS.

Alien technology or a natural comet? The post Scientists Announce Results After Scanning 3I/ATLAS for Alien Signals appeared ...

Scientists have found further evidence of possible biosignature gases on the nearby exoplanet K2-18b, strengthening the case that it could support alien life. Here on Earth, DMS is produced primarily ...

An ocean world that's teeming with microbes — and who knows what other kinds of life — is currently the best explanation for some chemical signatures that the James Webb Space Telescope has spotted in ...

From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

The universe has a way of making us remember how little we really know about the area outside of our solar system. For the ...

A Pentagon study released Friday that examined reported sightings of UFOs over nearly the last century found no evidence of aliens or extraterrestrial intelligence, a conclusion consistent with past U ...