L the Ring nebula in Lyra is the best-known of the planetary nebulae.
l天琴座中的环状星云是最著名的行星状星云。
NASA's Spitzer Space Telescope finds a delicate flower in the Ring Nebula, as shown in this image.
斯比策空间望远镜在星云环里找到一朵精致的花朵，如图所示。
Located about 2,000 light years from Earth in the constellation Lyra, the Ring Nebula is also known as Messier Object 57 and NGC 6720.
这个星云位于距离地球2000光年的天琴座内，它还有另外两个名字：MessierObject57和NGC 6720。
Previous images of the Ring Nebula taken by visible-light telescopes usually showed just the inner glowing loop of gas around the star.
以前由可见光望远镜拍摄的星云环仅仅显示出其内部的环绕着恒星的炽热气体环。
Located about 2, 000 light years from Earth in the constellation Lyra, the Ring Nebula is also known as Messier Object 57 and NGC 6720.
这个星云位于距离地球2000光年的天琴座内，它还有另外两个名字：MessierObject57和NGC 6720。
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。
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。
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