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The Greys
Who are the beings with big heads and giant eyes that seem to have been visiting our planet for millennia? Known by researchers as the "greys," these mysterious beings have been depicted in rock-art and carved stone figures throughout the ages and all over the world. Who are they, what planet do they come from, and what do they want?
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Other episodes for this season
![The Mayan Conspiracy](https://image.tmdb.org/t/p/w300/pI8odNfusUenQ513T6P54tAslWb.jpg)
![The Doomsday Prophecies](https://image.tmdb.org/t/p/w300/K0Yh83V9AjnhbbtFeEFeurMi7k.jpg)
![The Greys](https://image.tmdb.org/t/p/w300/djLb26WwqiOtUnZILGqOqB2Xmae.jpg)
![Aliens and Mega-Disasters](https://image.tmdb.org/t/p/w300/1WQpx5pwCtef51zJVbrlFMTI5l8.jpg)
![The NASA Connection](https://image.tmdb.org/t/p/w300/xLdtpZC7oFpxDbOvl8vkxBLZf8T.jpg)
![The Mystery of Puma Punku](https://image.tmdb.org/t/p/w300/hwk7FiFRidBUb7ePqhLp0OBIpow.jpg)
![Aliens and Bigfoot](https://image.tmdb.org/t/p/w300/uSgupdZppkj6xVgfS3ESrM5rCHh.jpg)
![The Da Vinci Conspiracy](https://image.tmdb.org/t/p/w300/4EFNlL5sqwBlFdLimrMWRniaJQW.jpg)
![The Time Travelers](https://image.tmdb.org/t/p/w300/ydO2D0RgsMoSce9KBlSPkPRUKDy.jpg)
![Aliens and Dinosaurs](https://image.tmdb.org/t/p/w300/k88lQXO9KRXDQyVW4amG56GBS4O.jpg)