Supernovae And Earth's History

Posted by
DA Morgan on Jan 11, 2002 at 17:09 (

An exploding star may have destroyed part of Earth's protective ozone layer 2 million years ago, devastating some forms of ancient marine life, according to a new theory presented at this week's meeting of the American Astronomical Society.

The new theory brings together puzzling clues from several different fields of research, including paleontology, geology and astronomy.

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