Moon’s mysterious disappearance 900 years ago finally gets an explanation

According to one scribe in medieval England, A.D. 1110  was a “disastrous year.” Torrential rainfall damaged crops, famine stalked the land — and, as if that wasn’t bad enough, on one fateful night in May, the moon simply vanished from the sky.

“On the fifth night in the month of May appeared the moon shining bright in the evening, and afterwards by little and little its light diminished,” the unnamed scribe wrote in the Anglo-Saxon manuscript known as the Peterborough Chronicle. “As soon as night came, it was so completely extinguished withal, that neither light, nor orb, nor anything at all of it was seen. And so it continued nearly until day, and then appeared shining full and bright.”

…Careful evaluation of ice core records points to the occurrence of several closely spaced volcanic eruptions,” which may have occurred in Europe or Asia between A.D. 1108 and A.D. 1110.

Those volcanic events, which the researchers call a “forgotten cluster” of eruptions because they were sparsely documented by historians at the time, may have released towering clouds of ash that traveled far around the world for years on end. 

Moon’s mysterious disappearance 900 years ago finally gets an explanation | Live Science

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