What's up with the "UFOs"?

Seriously, I've been noticing "UFOs", which aren't said by me to be extraterrestrial, but rather unidentified terrestrial craft (most likely). I've been wanting to record these things for a VERY long time; I don't think anyone would think the things that I say are true; but the problem is, by the time I can record them, I'd have to get an enormous lens worth thousands of dollars! I suppose I could use a telescope, but haven't had luck with that lately! It's fascinating to me; I'm the type of person who likes when things can be explained away, however, I hate it when the unexplained isn't on record.