Did you see a light in the sky that you couldn't identify? What's Up! helps you find out what you saw by answering a few simple questions about your observation. With help of What's Up!, you can easily identify stars, planets, airplanes, satellites, meteors and much more. Have you ever seen a UFO (Unidentified flying object)? In most cases these sightings can easily be identified as something natural or man-made. Venus for example often looks like an exceptionally bright, stationary light in t