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Approximately 72 million Americans (based on 1999 figures).

A Roper Poll in 1999 found that 25% of the US population thought that UFOs were alien spaceships. The population of the US in 1999 was 285 million.

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Q: How many Americans believe that earth has been visited by aliens?
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Why do Americans think aliens are real?

Well when you think about it they might be real. I mean, the universe is so big and there really isn't any proof they aren't real. Most people who believe in aliens don't think they have visited earth. It's almost impossible they have visited earth. But they could exist on a planet far away that no one has found yet. So, there could be aliens far away. Oh and stop hating on Americans! But yeah we Americans are kind of insane!


Have aliens really visited the earth?

no


Have aliens come to earth?

There is no solid proof aliens even exist much less have visited Earth.


How many aliens sightings of aliens and UFOs?

There are many UFO sightings every year. Half of all Americans believe that Earth has been visited by aliens. Almost that amount believe that aliens are spying on us right now. The others are non believers. UFOs have no known connection to aliens whatsoever. They are just things in the sky the witnesses themselves could not ID. So far no aliens have been proven to exist, either. So the best answer to the above question is "zero". The reason so many people are "non-believers" is that flying saucer buffs are "non-provers"!


Does Richard Dawkins believe in aliens?

I doubt if Richard Dawkins believes in aliens in the sense of intelligent beings from outer space who have visited our earth. I think he does believe that, somewhere out there in the billions of planets that exist in other solar systems, there must be other life forms, some of which will be at least as intelligent as we are.


Do aliens ever exist?

If by 'aliens' you mean intelligent extra-terrestrial beings, there is no plausible evidence that any have ever visited Earth. However, with billions of planets in the universe, it would be arrogant of us to believe that we are alone, as the only intelligent life forms that ever evolved. There must be 'aliens' out there.


Themes in chariots of the gods?

Aliens visited Earth & advanced man's progress on more than one occasion.


Has earth been visited by aliens before?

A few think yes, most think no, but the argument won't go away.


When did the ancient aliens visit earth?

There has been no absolute proof that we have been visited by anything or anybody. Until then we can assume we're alone.


How many times have aliens been on earth?

There is no scientific evidence or consensus to suggest that aliens have ever visited Earth. While claims of alien sightings and encounters have been made, none have been substantiated by credible scientific investigation. The existence of extraterrestrial life remains an open question, but to date, there is no definitive proof of interactions between aliens and humans.


Did any alien ever visit in this earth?

Some folks believe that aliens have visited, and use this belief to explain the pyramids and other ancient wonders. On the other hand, believing that aliens were responsible for such wonders is - to some people - insulting to the intelligence of ancient people. There does not appear to be any evidence for alien visits that can stand thorough examination.


What if earth did have aliens?

if aliens are on earth why does it matter, there awesome