File:1.2-million-galaxies-cross-section-e1468508533423.png

This is a section of the 3-dimensional map. The rectangle on the left shows a cut-out of 1000 square degrees in the sky containing nearly 120,000 galaxies.

http://www.sdss.org/press-releases/wp-content/uploads/2016/07/boss3dwedge.png

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Each dot in the picture at top indicates the position of a galaxy.

A slice of the universe 6 billion light-years wide (thus we see some of these galaxies 6 billion years into the past), 4.5 billion light-years high, and 500 million light-years thick.

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http://earthsky.org/space/1-2-million-galaxies-in-3d

July 2016 - The largest three-dimensional map of our universe so far. It’s a map of 1.2 million galaxies over a quarter of the sky and over a volume of space of 650 cubic billion light-years.

Sloan Digital Sky Survey -- https://www.sdss3.org/

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