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66: The Black Knight Satellite - Watching us from orbit for 13,000 years

The Why Files: Operation Podcast

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The Origin of the Black Knight Satellite

In 1973, Duncan Lunnen identified a hidden radio message sent by the Black Knight satellite. The only star in the constellation that was out of place was Epsilon Bootus. According to the map, it's been here for 13,000 years. In 1998, everything would change when Space Shuttle Endeavour took this photo.

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