YouTube UFO hunter Mister Enigma reports sighting the legendary Black Knight satellite on NASA's Live ISS Stream.
Sightings of UFOs in the vicinity of the ISS are common, but what is unique about this particular sighting is the suggestion that it could be the legendary Black Knight satellite, an ancient alien UFO believed to have orbited the Earth for at least 12,000 years.
The conspiracy theory lore of the alien Black Knight satellite is fascinating and rich.
According to conspiracy theorists, the Black Knight satellite is an alien probe in near-polar Earth orbit. It has been observing and mapping the Earth for nearly 13,000 years.
The conspiracy theory apparently originated from May 14, 1954, newspaper reports that the USAF had detected two satellites orbiting Earth. The report by the St. Louis Dispatch and the San Francisco Examiner quoted a UFO researcher Donald Keyhoe, who claimed a retired naval aviation officer as his source.
The claim attracted public attention at the time because no country had developed the technology to launch satellites into space. So if in truth there was an artificial satellite in Earth orbit, it could only have come from an extraterrestrial civilization.
Later in 1960, Time reported that the U.S. Navy had detected a dark, tumbling object weighing about 10 tons in Earth orbit. The UFO was believed at first to be a Soviet spy satellite, and its orbit was reported as 79 degrees from the equator -- the standard polar orbit is 90 degrees -- with an orbital period of 104.5 minutes.
According to reports at the time, the Navy said the eccentric orbit of the object had an apogee of 1,728 km and a perigee of o 216 km.
But because no Russian satellite with the stated orbital characteristics was known, UFO enthusiasts identified the object with the 1954 object dubbed the "Black Satellite."
However, some skeptics argued that the UFO could have been the missing casing from the Discoverer III craft launched at about the same time that the Navy reported detecting the "Black Knight" satellite.
The Navy had located a casing of Discoverer VIII, but it is believed there was a second casing that was never found.
In 1963, the astronaut Gordon Cooper reported seeing a "greenish UFO" during his Mercury 9 space flight. NASA, according to conspiracy theorists, later claimed that Cooper's report was an error caused by electronics malfunction and Cooper breathing in too much carbon dioxide.
When Cooper reportedly described the story that he sighted a "greenish UFO" as pure fabrication, members of the UFO community claimed that he issued the denial because the authorities wanted to suppress the truth about his sighting.
It was rumored that at least 100 people at the Muchea Tracking Station near Perth in Australia witnessed the detection of the object on NASA's tracking systems.
UFO enthusiasts claim that NASA and the Soviet space agency took keen interest in the search for the Black Knight satellite and intercepted radio signals from the satellite in the 1950s and 1960s, but kept their findings secret.
Conspiracy theorists say that the detection of the Black Knight satellite in the 1950s and 1960s provided an explanation of previous reports from late in the 19th century and in the early 20th century about strange signals detected from space.
Nikola Tesla reportedly intercepted signals from the Black Knight satellite in 1899, and several astronomers reported detecting strange radio signals from an unidentified object orbiting the Earth.
In the 1920s, an amateur HAM radio operator received strange signals from space identical with Tesla's.
Norwegian scientists working with short wave transmissions in 1928 also picked up Long Delay Echoes (LDEs) from space, which conspiracy theorists say came from the Black Knight satellite.
Dr. Luis Corralos with Venezuela's Communications Ministry reportedly photographed the Black Knight satellite in 1957 while trying to snap a photo of the Russian Sputnik I over Caracas. The Black Knight satellite appeared to be "shadowing" Sputnik I, the first man-made artificial satellite, launched into elliptical low Earth orbit on October 4, 1957.
It is alleged that the Gruman Aircraft Corporation snapped a photo of the Black Knight satellite using a tracking camera at the company's Long Island factory but kept it secret.
In 1973, a researcher, Duncan Lunan, analyzed the LDE data obtained by the Norwegian scientists and announced that he had decoded it. According to Lunan, it was a star chart to Epsilon Boötis, a double star in the constellation Boötes.
The chart, according to Lunan, suggested that the Black Knight satellite originated from the distant star and was transmitting nearly 12,600-year-old signals back home that it had found life on planet Earth.
Finally, in 1998, during the space shuttle Endeavor's STS-88 mission to the International Space Station, the crew snapped several photographs of a UFO that members of the UFO community hailed as proof that the Black Knight satellite was real.
According to conspiracy theorists, NASA tried to suppress the evidence by removing the photos from its website. When the photos reemerged again in new URLs, NASA tried to explain them away as space junk ("thermal blanket debris").
Conspiracy theorists claim, however, that the photos are of very high quality and show clearly an alien craft.
Conspiracy theorists accuse NASA of refusing to acknowledge publicly that we have direct evidence of a probe from an alien world located in the star system Epsilon Boötis.
But skeptics, such as Martina Redpath of Armagh Planetarium and James Oberg, have been harsh in their criticism of the Black Knight satellite conspiracy theory.
Martina Redpath once dismissed it as "one rambling and inconsistent dollop of myth."
[Images: NASA, via Wikimedia; UFO Sightings Daily]