Space Surveillance refers to the monitoring of objects in Earth's orbit, including satellites, debris, and other spacecraft. This process helps track the movement and position of these objects to prevent collisions and ensure the safety of space operations. Technologies used in Space Surveillance include radar, telescopes, and advanced software systems. Organizations like the United States Space Surveillance Network (SSN) collect and analyze data to maintain a comprehensive catalog of space objects, which is crucial for both military and civilian space activities.