They can be really huge or small.
Their rings are 20ft that become about 40-50ft across.
A large portion of UFO sightings occure in the US every year.
My own personal opinion is that a large percentage of UFOs have a rational explaination. But there are a few that I believe are beings from other planets. There have been far too many sightings that can't be explained.
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.
These flying disc known as UFOs are in all kind of shapes and sizes. According to UFO Hunters there was once a UFO reported to be a mile wide, longer than a football field. Some maybe smaller than a airplane.
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.
Since UFOs are unidentified, it is unknown what is inside of them.
No, UFOs are not technically extinct, they are just rare to see.
Many UFO's are seen over military bases, human conflicts such as battle zones and large cities.