Depends......
You could just throw a frisbee in the air, and it could be an UFO
Or...........
You could make a real jet powered one. You just need more resources, a
intelligent mind, and of course a vast imagination!
Air +metal= ufo
Alien+rocket=UFO
Alien+rocket=UFO
No
active robot+glass+metals+air
This question does not even make sense.
By make and model number.
Probably at night if you glance at it, but I'm so interested in the UFO conspiracy, that when I see a plane at night I make sure it's just a plane........
a UFO See http://grammar.ccc.commnet.edu/grammar/abbreviations.htm (all the way to the bottom) for help determining when to use a or an before an abbreviation.
Ufo's do exist because a Ufo is a thing in the sky that you can not explain.
They usually see UFO's at a UFO sighting
Yes, they make crop circles to show their message to us and decode it