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İstanbul / Kumburgaz UFO's and ALIENS ARE BACK in 2008! from fox mulder on Vimeo.

A VIDEO has been released that claims to show aliens and their spacecraft  with one UFO researcher calling it  the  "most important images of a UFO ever filmed".

The vision was taken by 42-year-old night guard Yalcin Yalman in a compound in Turkey earlier this year.

“I don’t know what these things are. We filmed them several times and they are totally unknown to us. I was very excited when I saw them and I want the world to know that UFOs do exist,” Mr Yalman said.

Almost two-and-a-half hours of footage was filmed featuring a variety of objects ranging from incredible flying saucer-type 'craft' to clustering orb-like lights hovering in the night sky, the Sirius UFO Space Science Research Centre in Turkey said.

The centre's UFO researcher Haktan Akdogan said physical forms of UFOs and their metallic structures were clearly noticeable in the video.

"What is more important is that in the close-up of some footages of the objects, entities in them can be distinctly made out," he said.

Mr Akdogan said he had analysed the video and come to the conclusion that it was "100 per cent genuine".

"The objects filmed are structured objects and are not the result of misidentification or natural phenomena, aircraft or astronomical objects," he said.

"They are not the results either of any kind of computer animation. Now is it a time for world governments to acknowledge the reality of UFOs."

"The images captured on film are expected to have a tremendous impact throughout the world and they are the most important UFO images ever caught on camera."