A composite image of the Milky Way galaxy which is comprised of 800,000 individual photos taken by NASA’s Spitzer Space Telescope.
The large image was made from stitching together 800,000 individual pictures taken by Spitzer, for a total of 2.5 billion infrared pixels. It covers an area of the sky about as wide as a pointer finger and as long as the length of arms outstretched, which might sound small, but covers about half of the entire galaxy, says Robert Hurt, of the Spitzer Science Center at Caltech.
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