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Scientists Discover Weird Conditions at Site of Star That Exploded During the Period of Japanese Samurai - Futurism

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In 1181 — during the early years of the samurai who would dominate Japan’s feudal period — astronomers there witnessed a spectacular sight in the night sky. They observed remnants of a star that had survived its own explosion, a bright object in the Cassiopeia constellation visible for at least 185 days.

The supernova, independently documented almost a millennium ago by Japanese, Chinese, and Arabic astronomers, is just one out of five events like it recorded before the invention of the telescope several hundred years later.

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