Photo reblogged from Medieval with 81 notes
Ancient text gives clue to mysterious radiation spike
Eighth-century jump in carbon-14 levels in trees could be explained by “red crucifix” supernova.
His search found the eighth-century entries in the Anglo-Saxon Chronicle at the Avalon Project, an online library of historical and legal documents hosted by Yale University in New Haven, Connecticut. Scrolling down to the year ad 774, Allen found a reference to a “red crucifix” that appeared in the heavens “after sunset”.