The free screensaver, Asteroids, was created by RateMyScreensaver.com and contains 15 high resolution images of Asteroids. Asteroids, also called minor planets or planetoids, are a class of astronomical objects. The term asteroid is generally used to indicate a diverse group of small celestial bodies that drift in the solar system in orbit around the Sun. - wiki Screensaver Picture Count: 15 Screensaver Type: Slideshow Credit: All images in this screensaver provided by NASA and the ESA