A growing conspiracy theory suggests the Moon is occupied by advanced aliens that have banned humans from returning.
The theory links in with others that claim there are alien bases on the dark side of the Moon.
In a feature devoted to the theory, conspiracy theory website Ancient Code said: “Have you ever asked yourself why mankind has not returned to the moon in recent years?
“According to many researchers and Ufologists, the American space agency is hiding a sinister secret from society, and we are not familiar with everything that has occurred—and is still occurring—on the surface of the moon.
“Many people claim there is enough evidence to suggest there are Alien bases on the moon.
“Rumors, declassified documents, and whistleblowers have come forward saying that agencies around the globe simply cannot afford to let society know what’s really on the moon.”
The theory suggests that NASA astronauts during the moon landings met with aliens, who eventually warned them not to return.
The website added: “The idea that there are alien bases on the moon would explain why we stopped so abruptly going to the moon.
“Also, with our current technology, why haven’t we created a permanent manned outpost on the lunar surface?
“Wouldn’t it be easier to build a permanent structure on the surface of the moon, than to have a floating space station orbiting around Earth?”
The far-fetched theory goes onto suggest aliens are mining the moon of its resources, and UFOs, that allegedly visit Earth, are stationed on the moon.
The late Dr Harold Urey investigated lunar science from the 1950s.
He claimed to be “terribly puzzled” by the rocks astronauts found on the moon and their Titanium content.
The samples contained Titanium, which no one could account for the presence of.
Scott C Waring, editor of ufiosightingsdaily.com, is a believer.
He said even claims to have found evidence of structures on the Moon in US Navy Archives.
In a blog today, he said: “I found these structures today.
“The structure above was the most fascinating to me. It’s a long straight structure along what looks like a crater but is actually not.
“It’s actually all one structure. No crater there, just structure.
“Hard to understand I know.”
Ancient Code added: “But, is there really an alien base there? Well, I guess you can’t know that but, is it a coincidence that there are some lunar rocks that have been found to contain PROCESSED METALS such as Brass, Uranium 236 and Neptunium 237?
“These elements have NEVER been found to occur naturally.
“Uranium 236 is a radioactive nuclear waste which is found in spent nuclear and reprocessed Uranium.
“More interestingly, Neptunium 237 is a radioactive metallic element and a by-product of nuclear reactors and the production of Plutonium.”
However, the theory will be weakened if news from Elon Musk’s SpaceX project bears fruit.#
The billionaire’s private firm has been approached by two private citizens who have paid a significant deposit to take part on a week-long space flight around the Moon.