位于仙王座与天鹅座交界处的NGC 6946星系，因其自1917年以来记录到的超新星爆发数量位居已知星系之首，被称为“烟花星系”。该星系距离地球约2500万光年，是天文学研究中的重要观测对象。
Tony Hallas from Foresthill, California The Fireworks Galaxy (NGC 6946), a face-on spiral about 25 million light-years away straddling Cepheus and Cygnus, has produced ten known supernovae since 1917 — the highest rate of any galaxy on record. The imager gathered data in HαRGB filters over four nights with a 14-inch reflector and a Player Continue reading "Ten supernovae and counting" The post Ten supernovae and counting appeared first on Astronomy Magazine .
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