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Sloan Digital Sky Survey

The Sloan Digital Sky Survey is the most ambitious astronomical survey project ever undertaken. The survey will map in detail one-quarter of the entire sky, determining the positions and absolute brightness of more than 100 million celestial objects. It will also measure the distances to more than a million galaxies and quasars.

The SDSS addresses fascinating, fundamental questions about the universe. With the survey, astronomers will be able to see the large-scale patterns of galactic sheets and voids in the universe. Scientists have varying ideas about the evolution of the universe, and different patterns of large-scale structure point to different theories of how the universe evolved. The Sloan Digital Sky Survey will tell us which theories are right, or whether we have to come up with entirely new ideas.


Institute for Advanced Study The University of Chicago, The Johns Hopkins University, Princeton University, University of Washington, Fermi National Accelerator Laboratory

Japan Participation Group

Max-Planck-Institute for Astronomy / Heidelberg

US Naval Observatory

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