My Daily Space Wallpaper is a great selection of spectacular hi-resolution Space images for your PC desktop.
This wallpaper app does everything for you - My Daily Space Wallpaper automatically starts with your PC (although you can disable this) and provides you with a fresh space image every day. You set it to download hi-res images only, which is perfect for more modern screens, and you can keep an automatic copy of the wallpapers so you can use them again.
The one problem with My Daily Space Wallpaper is that not all of the images are, in our opinion, the type you would want decorating your desktop. That's not a problem, however, as you can quickly change the wallpaper by clicking "download a new wallpaper now", providing you with a brand-new image that will hopefully be more to your taste. You can access this button from the main interface, or by right clicking on the icon in the system tray.
If you're a fan of all things astronomical, then My Daily Space Wallpaper is a great desktop wallpaper option.