Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. For as long as humans have ...

For as long as humans have looked up at the night sky, we've wondered who, or what, might be looking back. From ancient myths about gods descending from the heavens to 20th-century UFO sightings and ...

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.

Being able to spot the Earth, let alone any signs of life on our planet, would require an enormous telescope from 66 million ...