However, on more careful analysis this strange structure seems more like a piece of space debris.
In actual fact this black object is probably a thermal blanket (to be precise, a Trunnion Pin Thermal Cover) that had become dislodged during an EVA.
Yet the discovery of an Earth-orbiting satellite was reported in a couple of newspapers from the time, and the respected Alias Corona A few years later, the Black Knight seemed have made another appearance when American newspapers reported in 1960 that there was an unusual object in polar orbit, by then both superpowers had satellites in equatorial orbit but polar orbit meant that the satellite could see every part of the Earth, yet neither country admitted owning it.
These images are often labelled as the most definite proof of this satellite.
In 1899, he reportedly intercepted a signal unlike any of the natural sources from Earth such as electrical storms that he had already investigated in his experiments. Tesla never claimed to have heard signals from a satellite orbiting Earth.
Today there are those who say he was listening to a transmission from an orbiting satellite of unknown origin later called by some the Black Knight.
So although claims of an ancient 13 000 year old satellite originally from a star in the constellation of Böotes, has reportedly been spotted and photographed by NASA astronauts as it travels in polar orbit; in reality this is not the case.
Black Knight is a jumble of completely unrelated stories; reports of unusual science observations, authors promoting fringe ideas, classified spy satellites and people over-interpreting photos.