Yes. Any time you look up into the sky and say "What's that?", you have seen an UNIDENTIFIED Flying Object.
No, UFOs are not technically extinct, they are just rare to see.
It's been said that there have been UFOs and extraterrestrails since the beginning of time. Early visitors that helped build monuments, and basically start civilization. Since there have been people to see them, there have been UFOs.
I guess the strongest evidence for not believing in UFOs would be that they haven't landed and introduced themselves. For some people to believe they would have to see the beings.
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).
Why do people see UFOs at any time is a mystery. Usually it's because they can't identify something they see and jump to conclusions.
astrobiology
There is no credible evidence for this.
yes duhh
There isn't a specific time, it is at random.
Please see the Related Links.
UFOs are so 'famous' because people have very fertile imaginations and enjoy a good mystery.