Hubble Telescope II Screensaver - Version 1.0 This screensaver shows spectacular and breathtaking images of stars, nebulae, and planets. Each image was taken by NASA's Hubble Space Telescope. 24 images are included. The screensaver also comes with a free Screen Saver Control that resides in the Windows system tray. This control makes it easy to activate any screensaver installed on your computer, to change the default screensaver, to access the screensaver settings, and to randomly launch a new screensaver at regular intervals or when Windows restarts. This evaluation version shows all of the images available in the full, registered version.