Recovery of nova spotted by ancient Koreans illuminates many stages of star system’s life cycle
On a cold March night in Seoul almost 600 years ago, Korean astrologers spotted a bright new star in the tail of the constellation Scorpius. It was seen for just 14 days before fading from visibility. From these ancient records, modern astronomers determined that what the Royal Imperial Astrologers saw was a nova explosion, but they have been unable to find the binary star system that caused it - until now.