UFO sightings are highly controversial and have not been proven. There are many skeptics on both sides of the argument. The US government tends to censor and hide details about UFOs and aliens.
Hypothetically, aliens would likely visit Earth to study our amazing ecosystems, to conquer us for our resources. Hopefully we would have friendly relations with aliens, however, knowing human nature, we don't tend to be kind and welcoming-at least on the political side of things. There would certainly be massive global votes and discussions if they were to visit us.
The word 'ancesor' usually means long dead relatives. Most people's ancesors are dead and won't be coming back.
I guess you could but it would defeat the whole purpose. If you built it then it's identifiable. UFOs by nature have to be unidentifed, coming from a place that is not Earth, or unlike anything we as humans can build.
You might see it coming. However, considering that there are no confirmed cases of UFOs visiting us in all of recorded history, there is really no way to know.
Where humans and alcohol are, UFOs will be.
There is only one UFO that comes at a time, but they will keep coming and you can shoot them down with a slingshot.
the correct answer is UFOs thanks for asking
There have been reports of sightings of white UFOs.
"I am coming home" ?
The ones who study UFOs are called Ufologist. They study every thing about unidentified flying objects (UFOs).
Please check the related links for information about UFOs.
UFOs can go as high as your imagination allows.
No, UFOs are not technically extinct, they are just rare to see.
Since UFOs are unidentified, it is unknown what is inside of them.