Ancient sea sediments give evidence of supernova blastNovember 14th, 2007 - 8:29 am ICT by admin
“Levels of radioactive iron-60 suggest that the supernova was between 60 and 300 light years away,” said Brian Fields of the University of Illinois. “It didn’t hit us or we wouldn’t be here,” he added.
This clearly points out to the fact that this supernova might have caused a minor extinction event on Earth.
“Radiation from the blast could have weakened Earth’s atmosphere, he says, exposing organisms to the sun’s ultraviolet radiation. This coincides with an extinction peak,” said Fields.
But scientists say that there is no direct evidence of a link between the supernova and any minor extinction episode. (ANI)
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Tags: 300, ancient sea, atmosphere, coincides, direct evidence, earth radiation, extinction event, fact that this, geologic timescale, million years, minor extinction, organisms, pliocene epoch, radioactive iron, sea sediments, supernova blast, ultraviolet radiation