As described by historians, the Moon still shines bright in the evening, gradually its light fades and suddenly disappears completely in the sky. Then suddenly reappeared. At the time this was truly a strange event causing a sensation.

Until recently, scientists had discovered this mystery by studying volcanic activity confirmed by ice core samples and tree-ring data.

The team identified volcanic sediments from 1108 to 1113 that were found in ice samples, indicating volcanic activity that could explain the sudden disappearance of the Moon. Material fired into the sky by a volcanic eruption may have persisted for years, creating what is called the stratosphere veil made up of small particles that can obscure the dim light of The moon while allowing the light of the stars to shine through it.

The study included references to ancient information regarding poor crop yields and bad weather that could also have been attributed to volcanic ash in the atmosphere deposited over a wide area. big.

It’s not known exactly what the volcano erupted, but the culprit is probably the Asama volcano in central Japan today. Asama volcano is 2,568 meters high, stretching through Gunma and Nagano prefectures, about 140 km northwest of Tokyo.