The Catalina Sky Survey (CSS) is a program dedicated to discovering and tracking near-Earth objects (NEOs), such as asteroids and comets. Established in 1998, it operates from the Catalina Observatory in Arizona, utilizing advanced telescopes to monitor the night sky for potential threats to Earth. The survey plays a crucial role in planetary defense by identifying NEOs that could pose a risk of collision. By cataloging these objects, the CSS helps scientists assess their trajectories and develop strategies for mitigation, ensuring a better understanding of our solar system and enhancing global safety.