Scientists say Nasa's Opportunity rover is trundling over what they believe to be clay-bearing rocks, which should provide fresh insight into Mars' water past.
[url=http://www.bbc.co.uk/news/science-environment-20649462]More...[/url]
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Scientists say Nasa's Opportunity rover is trundling over what they believe to be clay-bearing rocks, which should provide fresh insight into Mars' water past.
[url=http://www.bbc.co.uk/news/science-environment-20649462]More...[/url]