This story does seem to have some facts to back it up but there are more questions than answers, such as; if this thing really has been flying around in space why have we not attempted to dock on it or at least get up next to it and take some extremely good photos. Maybe NASA has done that and we just don't know about it.
The story of the black knight UFO begins way back in 1899 with a signal which was picked up by Nikola Tesla, coming from space. This signal was picked up again on various occasions in the 1920's by radio enthusiasts and there were many sightings by astronomers who watched and studied it. It made newspapers in the 1950's and 1960's. Pictures were taken in the 1960's. In the 1970's the signal was decoded and was a diagram of epsilon bootes star system. This is an amazing story.