The gift that keeps on giving ... everything from Opportunity over the past eight years has been a bonus. Photo: NASA WHILE many obsessed over speculation that NASA's newest Mars rover, Curiosity, had dug up signs of life – it had not – it is the agency's older, smaller jalopy, Opportunity, that has been exploring a more intriguing plot of Martian real estate. "This is our first glimpse ever at conditions on ancient Mars that clearly show us a chemistry that would have been suitable for life," said Steven Squyres, the principal investigator for Opportunity, said at a news conference last week at a meeting of the American Geophysical Union in San Francisco. Opportunity could be...
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