On Feb. 2, 1967, the U.S. Air Force launched a top-secret surveillance satellite called Keyhole 7-36 (KH-7). See how it happened in our "On This Day In Space" series!
On Feb. 2, 1967, the U.S. Air Force launched a top-secret surveillance satellite called Keyhole 7-36 (KH-7). See how it happened in our "On This Day In Space" series!
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