Sloan Digital Sky Survey

Overview

The Sloan Digital Sky Survey has mapped more than a third of the sky and the spectra of millions of galaxies, quasars, and stars, building a 3D map of the universe.

Observing bands

Knowledge connections

• ObservesVisible light
• ObservesNear-infrared
• MeasuresStructure Formation
• MeasuresBaryon Acoustic Oscillations
• MeasuresThe Cosmic Web
• MeasuresLarge-Scale Structure

Sources

Facts on this topic will be cited from these primary and reference sources.

• NASANational Aeronautics and Space Administration

  Mission data, planetary science, space telescopes, and public-domain imagery.

  Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.