Sloan Digital Skyhook

The Sloan Digital Sky Survey (SDSS) is a major astronomical project that maps the universe using advanced telescopes and imaging technology. It captures detailed images and gathers data on millions of stars, galaxies, and other celestial objects, creating a comprehensive catalog that helps scientists understand the structure and evolution of the universe. The "skyhook" in this context is not a literal hook but a metaphorical term describing the survey’s ability to 'grab' and hold detailed information about cosmic objects across large portions of the sky, enabling extensive research and discoveries in astronomy.