Key Milestones in Space Situational Awareness (SSA)

The ability to track and understand objects in space has evolved significantly, from early military systems to international cooperation and dedicated space-based sensors.

The top 3

1. First Operational Space Surveillance System: The U.S. Navy Space Surveillance System (NAVSPASUR), also known as the 'Space Fence,' began operations in 1959, becoming the world's first operational system to detect and track satellites.
2. Establishment of International Debris Coordination: The Inter-Agency Space Debris Coordination Committee (IADC) was established in 1993 as an international governmental forum to coordinate activities and exchange information on space debris research and mitigation.
3. First Dedicated Space-Based Surveillance Satellite: The Space Based Space Surveillance (SBSS) satellite, launched in 2010, was the first operational space-based sensor dedicated to the U.S. Space Surveillance Network, providing continuous tracking without atmospheric or weather interference.

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