This is the Black Satellite which has been CLAIMED TO BE orbiting the earth since it was discovered in the 60s. The origin of this satellite is unknown. It is claimed to be heavier and bigger than any satellite launched by either the U.S or USSR. It was also in polar orbit which is often used for earth mapping.
There is no hard evidence to prove any of this, in fact there is very little. People claim that this was covered up by the government, but there isn’t much the government can keep hidden.
This one is for you to decide.