Explanation: The most distant object easily visible to the unaided eye is M31, the great Andromeda Galaxy some two and a half million light-years away.

 
  • 说明: 我们肉眼能轻易看到最遥远的天体就是M31,也就是巨大的仙女座星系,距离我们大约250万光年远。
今日热词
目录 附录 查词历史