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.
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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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