Who says sky is the limit, atleast not for Microsoft's Worldwide Telescope. Microsoft released its Telescope to let amateur and professionals gaze the stars and explore the universe from their computer system. The WorldWide Telescope is a rich Web application that accesses high-resolution images taken by ground- and Earth-orbiting telescopes such as the Hubble Space Telescope, the Chandra X-Ray Observatory Center, and the Spitzer Space Telescope. This software is quiet similar to Google Sky.
The main screen of the Worldwide Telescope contains stars visible to the human eye that are mapped into constellations. You can navigate with your mouse in any direction and zoom in or out with its scroll wheel.
The image in this post was created by NASA in 2000 and its called Earth's City Lights.
Just check out the beauty of universe through this Telescope.