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Powder from the drill was a gray-green color, meaning it was not highly oxidized, said David Blake, principal investigator for Curiosity's Chemistry and Mineralogy investigation at NASA's Ames Research Center.
CNN: NASA: Yes, Mars could have hosted life
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"I think this is probably the only definitively habitable environment that we have described and recorded, " said David Blake, a scientist at NASA's Ames Research Center in Mountain View, Calif.
WSJ: Scientists Say Microbial Life Was Possible on Mars
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That lack of experience can be damaging as stars age, however, says David Haven Blake, author of the recently published Walt Whitman and the Culture of American Celebrity.
FORBES: College Majors Of The Stars