The Blueberries of Mars
PAY DIRT: The blueberries are actually the size of BB pellets and are probably minerals that accreted in water
U.S. GEOLOGICAL SURVEY / JSP / NASA
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The next step — the search for life — will have to wait until 2013 or so. That's when NASA has tentatively scheduled the first round trip to Mars — a mission that will pluck selected rocks off the Red Planet and bring them back home for closer study. Whether humans will ever follow those machines — President Bush's January announcement notwithstanding — is impossible to say.
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