Sky Screen Saver for Windows displays the sky above from any location on Earth. The night sky includes stars (from the Yale Bright Star Catalog of more than 9000 stars to the 7th magnitude), the Moon in its correct phase and position in the sky, and the position of the Sun and all the planets in the sky.You can display outlines, boundaries, and names of constellations, as well as names and Bayer/Flamsteed designations of stars brighter than a given threshold. A database of more than 500 deep-sky objects, including all the Messier objects and bright NGC objects can be plotted to a given magnitude. The ecliptic and celestial equator can be plotted, complete with co-ordinates.The sky map shifts position your computer display every 10 minutes.