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Supernova left its mark in ancient bacteria : Nature News & Comment April 16, 2013

Posted by sandyclaus in Drake Revisited.
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Sediment in a deep-sea core may hold radioactive iron spewed by a distant supernova 2.2 million years ago and preserved in the fossilized remains of iron-loving bacteria. If confirmed, the iron traces would be the first biological signature of a specific exploding star.

Shawn Bishop, a physicist at the Technical University of Munich in Germany, reported preliminary findings on 14 April at a meeting of the American Physical Society in Denver, Colorado.

via Supernova left its mark in ancient bacteria : Nature News & Comment.

 

Wait, don’t ALL heavier elements coem from starstuff?

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