About.com's paranormal area has an interesting article on the far side of the moon, commonly misidentified as the "dark side" of the moon, and the possibility of current or previous inhabitants. Beginning with the reason we only see one side of the moon, the article rehashes many of the various anomalies and secrets about the far side.

When we look up at the Moon, we always see the same side. This peculiarity results because the Moon rotates just once for every orbit it makes around the Earth. The Moon is slightly lopsided, so over millions of years, gravitational forces have slowed its rotation so that the one side always faces our planet.

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To bolster this claim, authors at such websites as Alien Presence on the Moon, site the words of Milton William Cooper, allegedly a former intelligence officer with the US Navy. In a 1989 press release from Cooper (again allegedly), he swears under oath that he was privy to information that the US government has knowledge of alien craft visiting Earth. “LUNA is the alien base on the far side of the Moon,” the release states. “It was seen and filmed by the Apollo Astronauts. A base, a mining operation using very large machines, and the very large alien craft described in sighting reports as MOTHER SHIPS exist there.”

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The UFO Casebook website says there are actual NASA and military photos of the bases on the far side of the Moon. “There is a HUGE alien moon base complex on the far side of the moon,” the website says. “This sounds silly but it is true and we have solid proof… straight from the military. In 1994, the US Navy sent a satellite called Clementine to the moon to image it for two months. During that time, the satellite took 1.8 million images. Out of those images, 170,000 images were made available to the public. The rest were classified. Classified moon craters?”

As the article states, the only way to really know what's on the far side of the moon is to get full access to pictures that are taken. As NASA prepares to return astronauts to the moon, including taking samples from the far side, here's hoping that everyone gets full access to what they find there.