Microsoft has released NASA Hidden Universe themepack for Windows 7.
A universe filled with kaleidoscopic colors blazes across your desktop in this theme for Windows 7, revealed by the infrared imaging of NASA’s Spitzer Space Telescope.
Discover more about Spitzer’s unique view of stars, nebulae, and galaxies on the Spitzer Space Telescope website.
Visit Microsoft for details & download.
You will also be able to use these Windows 7 themepacks on Windows 8 as well as Windows 8.1. If you need to install custom theme files, use our freeware Windows Themes Installer. It is a portable utility which allows you to install a theme, remove a theme and restore defaults easily in Windows 7 & Vista. Check out Ultimate Windows Customizer, which allows you to customize your Windows installation, including changing the Start Button, Logon Screen, Thumbnails, Taskbar, Explorer look, Windows Media Player and more! etc.