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Check out these mysterious cave carving, see more in this Ancient Aliens compilation. New Season Fri., Feb. 7 at 9/8c; Stream ...

Are ancient alien theories pure fantasy or a lost truth? From pyramids to myths, history is full of mysteries that defy explanation.

Many believe that aliens have already contacted us, while others think it's only a matter of time. If extraterrestrial life has reached ...

The first discovery of extraterrestrial life will almost certainly NOT be when it visits us, nor when we visit it. It won't be when we see ...

New research paper from the Cool Worlds Lab! Today we explore the implications of a classic result in statistics but applied to ...

Everybody probably wonders how aliens might look – if they even exist. Will they look like the classic bug-eyed martian men?

*OUTLINE:* 0:00 - Introduction 1:58 - Planet formation 7:08 - Plate tectonics 14:30 - Extinction events 18:41 - Biosphere 21:39 ...

Are we alone in the Universe? Probably, one of the most important questions one can ask. So, how are we currently trying to ...

Far beyond Earth, a new type of alien water planet could be speckling our galaxy by the billions, like cosmic dew drops.

Are we truly alone, or have extraterrestrials been guiding us all along? Learn more in this full episode marathon of "Ancient Aliens.

Proof of UFOs.

A massive thank you to Dr. Robert Pappalardo for his expertise and time. A huge thank you to Gretchen McCartney and Cynthia B.

Life as we know it is carbon-based, but does it have to be this way? There's another element on the periodic table that shares ...

Join world-renowned physicist Brian Cox as he delves into one of the universe's greatest mysteries: Are we alone?

For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on ...

*GUEST BIO:* Adam Frank is an astrophysicist studying star systems and the search for extraterrestrial life and alien civilizations.

Thanks a lot to Brilliant for supporting this channel. Finding alien life on a distant planet would be amazing news - or would it?

Is there life on...K2-18b? Professor Nikku Madhusudhan believes he has discovered alien life on an exoplanet 120 light years ...

Rep. Tim Burchett, R-Tenn., said he believes aliens have underwater bases on Earth. The representative joins "NewsNation ...