This is a free screen saver. It was created using only the highest quality photographs available for the objects in our solar system. You will see the sun, all the planets, many moons, comets and asteroids! You won't find a more attractive screen saver of it's kind. There is a nice soundtrack (from Star Trek III, The Wrath of Khan) which is mutable. It has many smooth transition effects. You can change the transitions as well as display length, size, background, order and position settings. You can even change the screen saver mode to collage, slide show, or floating. All of the photos include captions. It can be quite educational. All of the photos for this and my other screen saver, The Interstellar Screen Saver, came from NASA associated sites. I thank NASA and all of their co-horts for making these photos public domain (some other countries and organizations aren't so kind with their space photos).