no
There is no solid proof aliens even exist much less have visited Earth.
aliens dont exist
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!
Aliens visited Earth & advanced man's progress on more than one occasion.
Since we don't know about any aliens, there is really no way to know.
Aliens have never visited Saginaw.
There has been no absolute proof that we have been visited by anything or anybody. Until then we can assume we're alone.
napasapa
Since alien visits are not necessarily observed by us, or even if they are observed, they may not be possible to confirm, we cannot be certain how many times aliens have been on Earth, however I will say that we have no clear evidence that the Earth has ever been visited by aliens from outer space. That remains speculative.
There is no scientific evidence to confirm that Earth has been visited by aliens. Many reported sightings and encounters can be attributed to natural phenomena, human-made objects, or misinterpretations. The search for extraterrestrial life continues, but as of now, no conclusive proof of alien visits to Earth exists.
We won't know until we can all see them.
if aliens are on earth why does it matter, there awesome