no
There is no proof that aliens exist. I believe there is no such thing as aliens. Has anyone seen an alien ship? Has anyone seen an alien? No.
No aliens. No spaceships.
Scientists have not seen an alien, so there is no proof of which color they are.
Nope, there is no proof anybody has actually ever seen one... yet
A number of people CLAIM to have seen aliens, or THOUGHT they had seen aliens. So far, though, there has been no proof one way or the other.
I haven't seen any proof that she has dated anyone.
There's been rumors about aliens such as people saying they've seen one, but there has never been proof.
Apparently, there have been strange sightings, but there has been no evidence or proof that an extraterrestrial being (alien) has actually been seen.
An alien, as in extra-terrestrial, has never been seen
No. UFOs are proof that some people have seen things in the sky that they themselves cannot identify. That is what UFO means, not *alien spacecraft*. There has never been the slightest shred of evidence that *any* UFO was an alien spacecraft, so the answer to your question is no.
There is no proof positive of anyone seeing an angel. Many claims have been made, but none proven.
Many people have claimed to but they could be just seeing things or having a dream. But some could be true but there is no proof if it is.