If you find your Windows 7 desktop hardly attractive, try with NASA Hidden Universe, a theme that will show you the far depths of the universe on your computer's screen. Thanks to the theme functionality included in Windows 7 that changes the image on the screen after a certain amount of time, this kind of program can automatically transform your desktop into something changing and relaxing.
A window to outer space on your PC
The NASA Hidden Universe theme includes a wide variety of photographs taken with the Spitzer telescope, the most modern and powerful eye in the world, that is used to study the far depths of the universe. Many of its discoveries and photographs are really amazing, and the ones that have been chosen to form part of this theme will change every 30 minutes on your desktop.
Like all the Windows 7 themes, it customizes the interface's colors within those allowed by Microsoft, basically, the menu bars and animations that Windows includes by default will turn a dark gray color, and its activation and installation are as easy as double clicking on the file.