A mystery wave of cosmic radiation that smashed into Earth in the eighth century may have come from two black holes that collided, a study published in a British journal on Monday says. Clues for the strange event were unearthed last year by Japanese astrophysicist Fusa Miyake, who discovered a surge in carbon-14 -- an isotope that derives from high-energy radiation -- in the rings of ancient cedar trees.
A Gamma-ray Burst May Have Blasted Earth In The 8th Century
Agence France Presse, Business Insider
Mon, 01/21/2013 - 8:26am
Topics: japanese fusa miyake ad but space anglo-saxon chronicle english sun monthly notices britain's royal astronomical society german-based valeri hambaryan ralph jena's astrophysics institute milky way copyright 2013 afp all science facebook earth ad ad hambaryan neuhaeuser burst century event trees light stars years today record called carbon-14 holes skies journal place cosmic black collided rays time scientists rings kind evidence caused collision paper gamma
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