http://www.armaghplanet.com/blog/the-truth-about-the-black-knight-satellite-mystery.html
A mysterious orbiting object that might be much older than many people realize.
Some people think it spans back to a previous civilisation on earth
http://www.abovetopsecret.com/forum/thread975106/pg1
http://www.ancient-code.com/the-black-knight-a-13000-year-old-alien-satellite
http://artbell.com/the-black-knight-a-13000-year-old-alien-satellite
http://www.bibliotecapleyades.net/ciencia/ciencia_flyingobjects140.htm
http://mysteryoftheiniquity.com