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The Sloan Digital Sky Survey
This still image is from the 
“Galaxies Mapped by the Sloan Digital Sky Survey” video. Courtesy Mark SubbaRao and Dinoj Surendran, Adler Planetarium/University of Chicago. Used by permission. [Source: http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010136/index.html ]
“Galaxies Mapped by the Sloan Digital Sky Survey” video. Courtesy Mark SubbaRao and Dinoj Surendran, Adler Planetarium/University of Chicago. Used by permission. [Source: http://svs.gsfc.nasa.gov/vis/a010000/a010100/a010136/index.html ]