With the start of SDSS-IV this July, the Sloan Digital Sky Survey is entering a new and exciting phase of exploring the Universe. We’ve imaged 1/3 of the sky and taken over 3 million spectra, but we haven’t explored beyond the centers of nearby galaxies, haven’t mapped the Universe between 3 and 7 billion years after the Big Bang, and haven’t studied the part of the Milky Way that is only visible from the Southern Hemisphere. Well, that all changes starting now! We have a press release today featuring the science of SDSS-IV and including a fantastic video by John Parejko illustrating how SDSS takes all that data (hint: it starts with a lot of work in the daytime and continues with a lot of work in the nighttime).