The History Channel is showing a programme called Ancient Aliens today at 9pm. The blurb says:
"The Visitors: From the Dogon people of Mali to the Native American Zuni tribe, many ancient cultures believed in visitors from the stars. Could aliens have played a hand in human history?"
This is obviously not a new idea. Erich Von Daniken has been writing about that subject for about 40 years, with books such as Chariots of the Gods? : Was God An Astronaut?
However, I'd be interested to see whether this History Channel documentary has anything new to say. Sadly, I won't be able to, as the channel isn't available on freeview. If you do watch it, please leave a comment saying what you thought.
Chariots of the Gods? : Was God An Astronaut? Unsolved Mysteries of the Past