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Martians, flying saucers discovered on Mars, report extremely unreliable sources (+video)

Online news outlets that should not under any circumstances be trusted report that NASA's Curiosity Mars rover has captured images of advanced life on the Red Planet.

By Natalie WolchoverLife's Little Mysteries / August 24, 2012

'Mars animal' spotted by one YouTube user.

YouTube | StephenHannardADGUK

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According to the fringe sector of the Internet, Mars is practically teeming with aliens.

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Since NASA's Curiosity rover touched down on the Red Planet two weeks ago and powered up its cameras, it has already managed to photograph several alleged UFOs and other "anomalies" in the surrounding landscape.

From classic flying saucers to an absurdly out-of-place fossilized human finger, here's a rundown of what UFO believers claim to have found in Curiosity photos so far. [Gallery of Mars 'UFO' Photos]

Horizon anomaly (aka impact cloud)

Speculation about Martians in Curiosity's midst got off to a running start when the very first sequence of photos taken by the rover raised questions. A hazy, distant object mysteriously appeared and then disappeared in consecutive images of the Martian horizon, perplexing even NASA scientists at first.

But the much-discussed "anomaly" turned out not to be a sign of alien activity, but rather the plume of dust kicked up by the sky crane that delivered the rover close to the Martian surface, then veered off and struck the ground some 2,000 feet (600 meters) away.

"We believe we've caught what is the descent stage impact on the Martian surface," said NASA engineer Steven Sell, sky crane specialist on the Curiosity mission.

Flying saucers (aka dead pixels)

In footage posted to YouTube Aug. 18, user "StephenHannardADGUK" applies a series of filters to a Curiosity image of the nearby rim of Gale crater, revealing what he says are four flying saucer-like objects stationed in the sky. More than 700,000 people have since given the video a gander.

"Four objects caught by Mars Curiosity, very difficult to make out on original image so I have used a few filters to highlight," he said in the video description. "What are these four objects? UFOs, Dust particles, or something else? As always you decide."

Experts say the four "objects" are actually just dead pixels in the rover's CCD camera — single points in the camera's imager that have lost functionality and register as white. Marc D'Antonio, a photo and video analyst for MUFON [Mutual UFO Network], told Huffington Post, "I fully concur at this point that these are dead pixels on the imager. All CCD [cameras] have them, and in a bland atmosphere like that at Mars, they would be very obvious as opposed to an active atmosphere like Earth, where they could end up hidden for a long time before anyone noticed them."

Photoshop filtering processes often blend, color-correct or contrast-heighten images in ways that turn single dead pixels into larger, more prominent shapes. In other words, "using a few filters" is exactly what the YouTube user should not have done in trying to clarify the contents of the Curiosity photo.   

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