When the Galileo spacecraft swooped by Jupiter's frozen moon Europa in Nov. 1997, views of its blistered surface strengthened suspicions that a briny ocean harboring life could lie beneath an icy crust. AP hide caption

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Jeralean Talley addresses the congregation as her pastor, Reverend Dana Darby, holds the microphone for her during a celebration of her 115th birthday. Rebecca Cook/Reuters /Landov hide caption

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From Pork To Onion Sandwiches: Secrets To Supersurvivors' Long Lives
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We think that life came from non-life, from the increasing complexity of chemical reactions between biomolecules present on the primordial Earth. But what about the universe? How did it come to be if there was nothing before? iStockphoto hide caption

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