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Tree Ring Mystery

Surprising Suspect In Ancient Tree Ring Mystery

| Posted 03.15.2013 | Science

By Sean Treacy A mysterious burst of charged particles from space hit Earth at some point from 774 to 775 C.E. Scientists know this thanks to a spik...

Tree Ring Mystery Gets Surprising Cosmic Explanation

Posted 01.22.2013 | Science

By: Clara Moskowitz Published: 01/21/2013 03:55 PM EST on SPACE.com More than 1,200 years ago, some mysterious event was recorded in tree rings...