Lenticular clouds
Saucer- shaped clouds usually form at high altitudes, and these are called lenticular clouds. Lenticular clouds can be separated into altocumulus standing lenticularis (ACSL). Due to their shape, they are often mistaken as Unidentified Flying Objects, (UFOs).
Since no humans have visited Mars, it is unsure. But Mars is often mistaken for UFOs because of how bright the planet is.
That would be impossible to say. There are more UFOs that are mistaken identity than actually faked.
In earlier times I'm sure it was quite common. They didn't have the advanced equipment that we do today. Now however, scientists identify meteors long before they can be seen from Earth.
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).
Please check the related links for information about UFOs.
Since UFOs are unidentified, it is unknown what is inside of them.
UFOs can go as high as your imagination allows.
No, UFOs are not technically extinct, they are just rare to see.