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Mars Express Discovers Mysterious Martian “Spiders”


The European Space Agency’s Mars Express has snapped the telltale traces of ‘spiders’ scattered across the southern polar region of Mars. Rather than being actual spiders, these small, dark features form when spring sunshine falls on layers of carbon dioxide deposited over the dark winter months.

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ESA’s Mars Express has snapped the telltale traces of ‘spiders’ scattered across the southern polar region of Mars

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