NASA presents an improved infrared image of the Milky Way core, from previous data gathered by the Spitzer Space Telescope in 2008. The original image is stitched from 800’000 images Spitzer took during five years. Printed, the image spans 120 by 3 feet, 6 feet at the core buldge. Even at this resolution, the image contains only about 50% of our galaxy.
You can view the complete zoomable image here: http://mipsgal.ipac.caltech.edu/iracmips_map.html
[via: spitzer.caltech.edu, nasa.gov]