Sky survey
Sloan Digital Sky Survey
Also known as SDSS
Observatories
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
The primary and reference sources this topic draws on.
- 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.