ring nebula

基本解释

The newly discovered example of a ring-shaped planetary nebula is about 15, 000 light-years distant.
这个新发现的环形行星状星云案例据我们约 15000 光年。
This particular planetary nebula, pictured above and designated Shapley 1 after the famous astronomer Harlow Shapley, has a very apparent annular ring like structure.
上图中的行星状星云叫做Shapley1 以著名天文学家Harlow Shapley的名字命名，它有非常明显的环状结构。
In particular, this planetary nebula exhibits a curious "S"-shaped profile, with a central bar that is most likely the projection of an inner ring of gas discharged by the star, seen edge on.
尤其是这个星云形成了奇特的S型外观，而位于中央的恒星很可能就是激发周围气体放电的那颗白矮星。
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