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.
There is no evidence of any kind to support the idea.
No.
Since we don't know any alien language nor any aliens there is no answer to this question.
no, exept for us humans.
Yeah,probibly, because aliens are basicly people and and life form or even a tree could possibley be counted as an alien in my world. Anything not on earth would be an alien. E.T. MEANS OUT OF THIS WORLD AND ANYTHING OUT OF THIS WORLD IS AN ALIEN! So possibley!
yes
Not any time soon. Their existence is mathematically considered to be likely, but there's no credible evidence that any have ever visited the earth, and the distances involved make future contact unlikely.
So far, there has been NO CONFIRMED FINDING of any alien life - caught or otherwise.
Alien, is the term used to refer to life which does not originate from Earth. Though no hard evidence has ever been found to confirm presence of any life form outside earth.
It's extremely unlikely that anyone alive today will ever stand on any planet other than Earth.
There are no authentic and verifiable instances of any alien coming to earth. That being so there are no details of such an incident with the exception of conspiracy theories or fantasy tales.
There is currently no definitive evidence to suggest that any extraterrestrials (et's) are landing on Earth on a daily basis. While there are various reports of unidentified flying objects (UFOs), there is no concrete proof of regular alien visitation.