The file, GROUND.JPG, contains an image made by a large ground-based telescope under the best possible atmospheric conditions.
The file, HUBBLE.JPG, contains the same image made by the Hubble Space Telescope in orbit around the earth above the atomsphere. This picture was taken December 31, 1993, shortly following the December 1993 telescope-servicing space-shuttle mission where corrective optics were installed to refocus light coming from the telescope's flawed primary mirror and restored telescope performance to the original specifications.
