A Vast New Map of the Universe

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A schematic view of the new SDSS three-dimensional map which includes regular galaxies (black points) and luminous red galaxies (red points) and extends 5.6 billion light-years 40 percent of the distance to the edge of the visible universe.
A schematic view of the new SDSS three-dimensional map, which includes regular galaxies (black points) and luminous red galaxies (red points) and extends 5.6 billion light-years, 40 percent of the distance to the edge of the visible universe.

A team of astronomers led by Nikhil Padmanabhan and David Schlegel has published the largest three-dimensional map of the universe ever constructed, a wedge-shaped slice of the cosmos that spans a tenth of the northern sky, encompasses 600,000 uniquely luminous red galaxies, and extends 5.6 billion light-years deep into space, equivalent to 40 percent of the way back in time to the Big Bang.


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