Black Knight, Is a Unknown object orbiting Earth, We belive its old 13,000 yeairs, However, There have been a lot of reports of Black Knight.
In 1899, Nikola Tesla hearded a repeating radio signal witch he belived its coming from space. First news about this object arived in 1954, On newspapers. It was reserached by: Donald Keyhoe, Saying that have been two satelites have been detected orbiting earth. In 1960, US Navy have detected a dark, thumbling object. The object was first time photographed in 1998. It was confirmed that its an Alien Artifact. However, The pictures are of a thermal blanket. People suggested it can be a Pakal Spacecraft.