Alien hunters and UFO watchers are now interested in mysterious "twin towers" positioned on either side of a crater on the Moon. They're calling this lunar phenomenon "alien artifacts".

"2 days after full moon. Captured footage with 12″ Meade LX (no motor). Celestron zoom. Captured with Alpha 6000 at 60fps. Comes with a few fun moon facts. This looks like a huge megalith outside a football stadium. Just having fun looking at the moon," said amateur astronomer Jay Lee when he posted the video on YouTube.

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Lee's video shows visible two towers and the center of the crater appears to have large, monument-like objects jutting skyward -- one on each edge of the crater.

Scott Waring, popular internet UFOlogist, said it's certain the two towers originated from some long-dead alien civilization on the Moon. A lot of astronomers consider the Moon to be an actual planet because of the Moon's large size.

Advocates of this theory also said the Moon doesn't actually orbit the Earth. Rather, the two celestial bodies orbit each other around a point in space called a "barycenter".

"There are a lot of alien artifacts on the moon. That much I promise, but many are difficult to see, but can be seen if you have an infrared camera looking through a scope. This guy doesn't, but still caught some megaliths. If you have an IR camera, please check out the moon sometime. You will be blown away," Waring wrote on his blog.

The latest discovery is far from the first strange object seen on the Moon, however. Nor is this the first time towers have been discovered. Alien hunters have long been captivated by an object known as "The Shard" photographed by a NASA lunar orbiter in 1967.

The Shard, a supposed Moon tower, is believed to reach a full mile above the lunar surface. That would make it more than twice as tall as the Burj Khalifa in Dubai, the tallest man-made structure on Earth.

TagsUFO, Astronomy, moon, The Shard, NASA, space exploration, heavenly bodies, Alien