Download picture of a nice hd dark sky image. Widescreen Dark Sky. Dark Sky Background is available in 360x260, 1229x768, 1728x1080, 1920x1200 pixels resolutions. Choose Widescreen-Dark-Sky.jpg's appropriate size/resolution from following which best fit on your device.
To download above image, click on the download button, the wallpaper will open in browser's new window, then right click on the Dark Sky Background image and select 'save as' to save on your computer/laptop.