Cripes—I remember when we lifted the 30,000-pixel/2GB file size limit in Photoshop. Of this monster undertaking DP Review writes,

Researches from German university Ruhr-Universitat Bochum spent half a decade creating the largest astronomical image created to date, a 46-gigapixel image of the Milky Way, which is now available via an interactive online viewer. The image is made up of 46 billion pixels, and the file weighs in at a hefty 194GB in size… 22,000 Full HD TV screens would be required to display it at its full resolution.

Check out the not-so-easy-to-navigate interface here. [Via Steve Mansfield]