News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   NASA/Getty Images |   The Mother Ship This NASA photo shows the Earth from space. If life arose not just once, but multiple times on Earth, "life as we don't know it" could be here on our own planet, says astrophysicist Paul Davies. And if it's found, the chances for life elsewhere in the universe are sky-high. | Discovery News Video   « back to article

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