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CORONA was a highly classified United States military reconnaissance satellite program developed by the CIA and the Air Force. Operating from 1959 to 1972 under the cover name Discoverer, it became America's first operational space photoreconnaissance system. The satellites used a panoramic camera s...
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The KH-9 Hexagon was a series of large photoreconnaissance satellites operated by the US National Reconnaissance Office (NRO) from 1971 to 1986. Often referred to as "Big Bird," it combined high-resolution mapping and surveillance photography into a single platform. The satellite utilized a film-ret...
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