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What if aliens are living inside Earth?

Billions of years ago, another planet smashed into Earth. An event of this epicness could have created our Moon. It also ...

What could alien life look like? These Earthlings offer clues.

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

Scientists warn we may be missing signs of alien life across the universe

For generations, the search for life beyond Earth has focused on avoiding one of science’s biggest mistakes: claiming a ...

Could aliens ever visit Earth? An aerospace scientist unpacks the challenges of interstellar spaceflight

To travel between solar systems, a spacecraft would need extremely sophisticated – if not impossible – technology.
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As UFOs go mainstream, jury out on what the existence of alien life might mean for religion

LOS ANGELES (AP) - In "Disclosure Day," out Friday, Steven Spielberg is once again inviting audiences to ponder the existence ...
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The truth about whether we’ve actually discovered alien life, according to astrobiologists

Every few months, someone announces we’re on the verge of finding alien life, and the headlines go predictably insane. What ...