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Tardigrade water bears could survive 10 billion years, astrophysicists claim

Posted on July 14th, 2017 at 18:49 by John Sinteur in category: News -- Write a comment


In picking their apocalyptic poison, the scientists first tried to sterilize the planet with radiation. In the lab, some tardigrade species can survive radiation doses of 5,000 to 6,000 grays. (“You would be very, very lucky to walk away” from a dose of 5 grays, Sloan said.) But long before the scientists blasted Earth with enough radiation to kill all the tardigrades, they calculated that the radiation’s energy would boil the oceans away. The sticking point for tardigrades, then, was the evaporation of the planet’s water.

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