SDSS

The Sloan Digital Sky Survey (SDSS) is a major scientific project that maps the universe by capturing detailed images and spectra of millions of celestial objects like stars, galaxies, and quasars. Using powerful telescopes, it collects data to help astronomers understand the universe's structure, composition, and evolution. The SDSS has created comprehensive sky maps and makes its data publicly available, advancing research in astrophysics and cosmology. It’s like creating a detailed, ever-expanding catalog of the universe to explore its many mysteries.