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NASA photo of Mars sparks theories of alien life as eagle-eyed viewers spot tracks in the dust
A strange pattern in the soil of Mars has reopened the discussion that something may still be living on the long-dead planet.
An unearthed NASA photograph taken by the Curiosity rover on Mars has triggered wild speculation over potential alien tracks.
A NASA image from Mars has reignited speculation about extraterrestrial life, showing patterns some believe resemble tyre ...
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