NGC 4631：鲸鱼星系
2022年10月6日 NGC 4631: The Whale Galaxy Image Credit & Copyright: Michael Sherick Explanation: NGC 4631 is a big beautiful spiral galaxy. Seen edge-on, it lies only 25 million light-years away in the well-trained northern constellation Canes Venatici. The galaxy’s slightly distorted wedge shape suggests to some a cosmic herring and to others its pop...