503: DEEP DIVE: The Black Knight Satellite | Ancient Craft Watching us From Orbit

In 1957, the Soviet Union launched Sputnik 1. It was the first satellite in Earth's orbit. Or was it? For over a hundred years, an object has been seen, heard and photographed by people all around the world. This object became known as the Black Knight Satellite. The signals coming from the Black Knight Satellite have been decoded. And if the translation is correct, it's been watching us for 13,000 years. Let's find out why.