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来自维基百科,自由的百科全书
2017年7月,天文學家在NGC 474內發現Ia超新星SN 2017fgc[5]。該超新星距離宿主星系的核心區域有一定距離[6]。
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.