Scientists are listening in on sperm whale conversations and studying Earth's strangest microbes to prepare humanity for ...

The universe is vast and teeming with stars – but if intelligent life exists, it may not be able to visit Earth.

Add Yahoo as a preferred source to see more of our stories on Google. TV has taught us many important lessons about aliens. They are either here to observe us, replace us, eat our cats, or gently ...

How Radio Astronomy Helps Us See the Invisible Cosmos," astrophysicist Emma Chapman describes the hidden corners of space ...

NASA's hunt for alien life may be undermined by its own instruments, according to a group of leading astrobiologists who warn ...

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens — with screensavers.

One day, probably far off in the very distant future, if astronomers are correct in their assumptions about the vastness of space, Earth will be visited by intelligent beings from another planet.