Aircraft, lenticular clouds, plasma, balloons, mirages, birds, even swamp gas. The less logical people think they are alien spacecraft, but since the simplest explanation that fits the facts is the best, and the facts do not include any shred of evidence for alien spacecraft, that is not a logical choice of explanation.
unidentified flying objects
Yes.... People have seen UFOs.
Could be; there are people somewhere who will pay for anything you can think of.
People have reported sightings of UFOs in France, but there is no proof of their existence.
The ones who study UFOs are called Ufologist. They study every thing about unidentified flying objects (UFOs).
i reckon. But i don't think they ever will because the govenments are afraid of the fear that it will give people. When people are scared they do strange things.
No Most people don't even believe in Ufos so no need to be worried
I think they do.
astrobiology
There is no credible evidence for this.
yes duhh
UFOs are so 'famous' because people have very fertile imaginations and enjoy a good mystery.
A lot of dorks