Add Yahoo as a preferred source to see more of our stories on Google. A composite view of Mars taken by the Viking I and II probes. NASA/USGS In September, NASA announced the discovery of a possible sign of life, known as a potential biosignature, on Mars.

Have you ever wondered if there really are UFOs and other life forms? Now the CIA has released their “x-files” for all to see online. They released hundreds of documents about alleged UFOs and alien life forms according to fox8.com. They started to ...

Planet K2-18b, an apparent water world 124 light years away, has been seen as a promising location in the search for aliens, but telescopes on Earth failed to pick up any radio transmissions