They are made of metal dughhh
From several alleged crash sights the downed craft seems to be made of a light-weight metal of unknown origin.
NO!
No-one knows.
Since UFOs are Unidentified Flying objects, it is impossible to know what they are made up of, at least until we identify them.
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.
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.
UFOs? As in, 'flying saucers'? Simple. To make a 'flying saucer', get a saucer, pierce a hole at two ends and put a string through it and tie your contraption to the ceiling fan. Voila! FLYING SAUCER!!