sciencehabit writes: At a 3-day workshop, planetary scientists advocated for igneous rock–bearing landing sites as high-priority targets for NASA’s next Mars rover mission, scheduled to launch in 2020. The $1.5 billion rover, a near-copy of the Curiosity rover, will collect about 30 samples of rock and soil for eventual return to Earth. Mineralized fracture zones at such sties may have been home at one time hydrothermal system,s with hot, fluid-filled fractures. Hydrothermal sites on Earth harbor ecosystems with extremophilic microbes.
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