Moon
The last "Supermoon" of 2016 appears in the night sky in the village of St Florence, Tenby, Wales, 14 November, 2016. A Supermoon is when the moon's elliptical orbit around the earth brings it closer than normal and thus it appears bigger and brighter than usual. This year's November Supermoon will not be surpassed in proximity until 2034. Reuters

An "alien satellite", which is said to have orbited Earth for nearly 13,000 years, has been caught on camera in NASA images orbiting the Moon. YouTube UFO hunter Streetcap1 has posted NASA Apollo 16 images in a video on his channel. According to reports, the International Space Station footage and the images were scoured in an extensive search for evidence of alien life.

"I have been browsing a lot of photographs and I discovered this on a moon photograph," the expert said in the video. "It is on the edge of the photograph that is as close in as I can get. It appears on quite a few photos, not all of them. It is some sort of structure and it is just sitting orbiting the Moon."

"You can see its structure when I get a close up of it. To me it looks like some sort of structure," he added.

After watching the video, a number of viewers have suggested that the structure could be the mysterious Black Knight satellite, also known as the "Dark Knight".

"Looks kind of like the Dark Knight," Traci Hill posted on YouTube. Later, Valle Janes said: "Someone commented it looks like the Black Knight... I agree."

During a 1998 space shuttle mission, NASA astronauts captured an object on camera that was later named as the Black Knight Satellite.

However, other people were not that convinced and offered alternative explanations of this mysterious object. One poster with the user name Coil Smoke said: "Could be high terrain like mountain peaks still getting sunlight." Another user named Jack Gordon said: "Photographic artefact more likely than alien ship."

According to alien conspiracy theorists, the satellite is of extraterrestrial origin that is possibly up to 13,000 years old orbiting Earth in near-polar orbit.

However, there is a history behind this myth. In 1963, NASA astronaut Gordon Cooper was reported as saying that he had seen the Black Knight Satellite in space. But, there was a media blackout upon his return and the US space agency allegedly put it down to cosmic hallucinations.

Reports said that a decade later in 1973, Duncan Lunan, looked back at the Norwegian scientists' data from 1928. The Scottish researcher before claiming the "messages" suggested the Black Knight was sent by aliens from Epsilon Bo├Âtis, as a welcome message to Earth 12,600 years ago.

The first alleged photographs of the satellite were emerged in 1998 and were taken by astronauts on the space shuttle Endeavour, as it made its first flight to the ISS. However, a number of sceptics claim that the legend was retrospectively created after the 1998 images emerged. They also said that the existence of the Black Knight satellite has been debunked many times. At that time, the space agency said that the NASA images show a thermal blanket accidentally dropped from a space shuttle.

However, YouTube debunker NUA, laid the mystery to rest in 2015. In a video called "Black Knight Satellite UFO Documentary - Truth Exposed 2015 - (Debunked)", he claimed that he conclusively proved that the 'Black Knight', as photographed in 1998 NASA images, was nothing more than the dropped thermal blanket.

The crew of the Endeavour space shuttle lost the blanket as they worked on the developing the International Space Station (ISS).

The NASA video of the Endeavour mission that showed a thermal blanket on the ISS was compared by NUA. Then, the same blanket is seen being dropped by the crew as it tumbles away into space.

According to him, the blanket is exactly the same shape as the 'Black Knight' in the 1998 pictures, which were seized on by conspiracists. He explained that the object only appeared to change shape because it was turning as it fell away.