Large Astronomical Surveys (IMAGE) Ohio Supercomputer Center Caption Produced by the Sloan Digital Sky Survey, this three-dimensional map of the distribution of galaxies shows Earth at the center, and represents each galaxy with a single point. Large astronomical surveys, such as SDSS, rely upon a model of Baryon Acoustic Oscillations to provide a cosmological "standard ruler" for determining length scale. Ohio State University's Chris Orban and David Weinberg, Ph.D., have employed Ohio Supercomputer Center resources to simplify and better characterize that BAO model. Credit M. Blanton and SDSS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.