Yes there is a good cause because they'll always wonder
Nova - 1974 The Case of the UFOs 10-1 was released on: USA: 12 October 1982
UFOs are by their nature, impossible to prove. If they were proven, they would be identified and would cease to be UFOs.
UFOs are so 'famous' because people have very fertile imaginations and enjoy a good mystery.
Friday, December 2, 2011, over Sweden.
Not very good I'm afraid. In all the decades that UFOs have been sighted or reported, no credible evidence has been put forward that UFOs are from anywhere but the planet earth, either produced by human hands or by human imaginations. None whatsoever.
Where humans and alcohol are, UFOs will be.
the correct answer is UFOs thanks for asking
There have been reports of sightings of white UFOs.
The ones who study UFOs are called Ufologist. They study every thing about unidentified flying objects (UFOs).
UFOs are neither good nor bad . . . they are simply things we see in the sky that we do not recognize. That is why they are called "Unidentified" flying Objects (UFOs). If you mean, aliens from another star system, they do not exist in our Solar system, so cannot be either good or bad.
Please check the related links for information about UFOs.
Since UFOs are unidentified, it is unknown what is inside of them.