Ancient supernovae buffeted Earth's biology with radiation dose, researcher says

Monday, July 11, 2016 - 08:01 in Astronomy & Space

Research published in April provided "slam dunk" evidence of two prehistoric supernovae exploding about 300 light years from Earth. Now, a follow-up investigation based on computer modeling shows those supernovae likely exposed biology on our planet to a long-lasting gust of cosmic radiation, which also affected the atmosphere.

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