Detection of the "Black Knight" went cold for a few years until December 1957 when Dr. Luis Corralos of the Communications Ministry in Venezuela photographed it.
Sputnik 1 and 2 were the first modern satellites and they were launched a few months before Dr. Corralos photographed the "Black Knight". While photographing the passing of the Sputnik 2 as it passed over Caracas, he captured the "Black Knight" shadowing the satellite.
In 1960, the "Black Knight" was observed in polar orbit by the Northern American Air Defense System. Polar orbit was not possible for satellites at that time. The "Black Knight" object was also estimated to weigh 15 tons. A size and weight that was not capable to be launched in 1960. Both American and Soviet scientists and military were concerned because no knowledge of technology existed for either government. Yet, the mysterious object existed.
In 1963, American astronaut, Gordon Cooper, was launched into space on his 22 orbit mission in the Faith 7 capsule. He reported seeing a glowing green shape ahead of his capsule, and heading in his direction on his final approach. Although, the event was recorded on radar by the Muchea tracking station in Australia, the official explanation is that an electrical malfunction in the capsule had caused high levels of carbon dioxide, which gave Cooper hallucinations.
During this time, Ham radio operators worldwide had been receiving messages from the "Black Knight". Long Delay Echo (LDE) is an unsolved phenomenon where radio or television signals sent into space bounce back seconds (or even days) later, as if recorded and retransmitted by a satellite. The "Black Knight" remains a mystery. Until it decides to show itself again, we are left to ponder its intentions.