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January 7, 2014

Spirit took this composite image on Madimai Day (Sol) 1,202 (May 21, 2007), when he was exploring an area east of the elevated plain known as the "Home Plain" in the Columbia Hills. The attachment shows an area known as "Gertrude Wise", where you can see Spirit's wheels digging into the sand. The furrow revealed a patch of silica that also contains a name. The source of the material may be from an environment of hot springs or an environment known as fumaroles where an acidic stream bubbles up through cracks in the ground. In any case, its creation must involve water, and on Earth, both of these types of currents contain microbial life. Photo: NASA/JPL

A decade since the landing of Spirit and Opportunity - the Mars vehicles that changed the face of research

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Growth of bacteria that produce only the antitoxin (left), only the toxin (center) or both (right)

Germ Wars

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hydrophobic surface. Photo: MIT

The driest surface in the world

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