The SDSS data is shown as volumes with different colors, located within the observable Universe (the outer sphere, showing fluctuations in the Cosmic Microwave Background, taken from PR3 of the Planck mission). We are located at the center of this map. Credit: Cheng Zhao, Anand Raichoor (EPFL) and SDSS.
See also: SDSS [eBOSS](https://skfb.ly/6TPBI) and [pre-eBOSS](https://skfb.ly/6TPBJ) volumes.