The Universe Online

M. J. Raddick, A. S. Szalay
2010 Science  
Data from the Sloan Digital Sky Survey can be used by students, teachers, and the public to contribute to scientifi c research. The SDSS is two separate surveys in one. Galaxies are identifi ed in 2D images (right), then have their distances determined from their spectra to create a 2 billion light-years-deep 3D map (left) where each galaxy is shown as a single point, its color representing its luminosity.
doi:10.1126/science.1186936 pmid:20798309 fatcat:vpvdvh5zanhzxccmou7b4f3qoi