The Legacy Survey of Space and Time has started, marking a new era in astronomy

- The Legacy Survey of Space and Time (LSST) is a decade-long astronomical survey being conducted at the Vera C. Rubin Observatory in Chile, which recently began full science operations. It will repeatedly image the entire southern sky every few nights using the world's largest digital camera (3.2 gigapixels). - This matters because LSST will generate an unprecedented amount of data — roughly 20 terabytes per night — tracking billions of objects and detecting moving or transient phenomena like asteroids, supernovae, and potentially hazardous near-Earth objects. It is designed to address four main science pillars: cataloging the Solar System, mapping the Milky Way, studying dark matter and dark energy, and exploring the changing night sky (time-domain astronomy). - The Rubin Observatory was named after Vera Rubin, the astronomer who provided key evidence for dark matter. The project has been under construction and testing for over a decade, so the survey's official start is a major milestone in astronomy.