Who hasn't looked into the sky and wondered if there's life out there, somewhere, looking back at us? Is it possible there's alien life closer to home — within the bounds of our solar system? The ...

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray rocks ...

The search for life isn’t limited to distant exoplanets—some of the most promising candidates may be right here in our own solar system. Ancient Mars, the vast subsurface oceans of Europa and ...

The Science: Europa has been considered as a top contender for alien life for even longer than Enceladus, thanks to its massive under-ice liquid water oceans. It also displays water vapor plumes ...

Scientists say aliens are not hiding in Area 51. Experts believe life may exist on distant planets with water and the right temperature. Some moons in our Solar System, like Enceladus and Titan, may ...

For millions of years, a frozen wanderer drifted between the stars before slipping into our solar system as 3I/ATLAS—only the ...

Scientists found new evidence (or lack thereof) disproving the conspiracy theory that interstellar comet 3I/ATLAS is alien technology.

The interstellar visitor, only the third such object to be discovered passing through our solar system, ignited controversial ...