I am not just saying this for the sake of a story, or for attention, but the other night when I was talking with my friends in a parking-lot circle I saw a shooting star. My eyes followed it through the sky and I pointed to it, opened my mouth, and before I could say "make a wish, its a shooting star" it made a 90 degree turn into outer space and disappeared.
I stood there in the center of my friends with mouth propped open, wide eyed, dumb founded, barely emitting enough breath to audibly speak "what?" As my friends looked at me with curious and amused facial expressions. In a world like this, not much really surprises me, and for my friends to see me like this was intriguing to them.
If you believe there is an infinite amount of space, you must also accept that there is a 100% probability that there is another planet with the same phenomenon Earth has. Because with infinite space, there is infinite possibility, within the permitted laws of which the infinite universe exists.
I don't know what it was, but it may very well have been a UFO. As corny as that may sound to some of you.