Also known as NGC 772, the island universe is over 100 thousand light-years across and sports a single prominent outer spiral arm in this detailed cosmic portrait.
这座宇宙岛的另一个编号是NGC 772，直径超过了10万光年，在下面这幅宇宙图中能清晰看到它只有一条外层螺旋臂。
Also known as NGC 772, the island universe is over 100 thousand light-years across and sports a single prominent outer spiral arm in this detailed cosmic portrait.
这座宇宙岛的另一个编号是NGC 772，直径超过了10万光年，在下面这幅宇宙图中能清晰看到它只有一条外层螺旋臂。
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