Not seen too much that could be unexplained. BUt have several times seen lights in the sky that have suddenly changed direction without any noticeable turn. I did research one evening after such a viewing for any known or visible satellites etc and nothing had passed over my visible area for some time. So I am not sceptical or anything but have an open mind on most things.
If you eliminate the impossible, what ever is left, however improbable must be possible and probable.