Gamma-Ray Burst Fingered for Carbon 14 Spike in A.D. 774
Jan 21, 2013•1 min
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Episode description
Tree-ring data from A.D. 774 show a sudden spike in radioactive carbon 14, pointing to a burst of charged particles or high-energy radiation that struck Earth. A relatively nearby gamma-ray burst could be the culprit. John Matson reports
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