This 1991 image from NASA's Hubble Space Telescope captures a small section of the Cygnus Loop supernova remnant.
这幅由哈勃空间望远镜摄于1991年的图像捕捉到了天鹅座Loop超新星的一小段残骸。
Also known as the Cygnus Loop, the Veil Nebula now spans nearly 3 degrees or about 6 times the diameter of the full Moon.
面纱星云也被称为天鹅座环，现在的视角跨度近3度，即大约6倍满月的直径。
The Cygnus Loop appears as a faint ring of glowing gases about three degrees across (six times the diameter of the full moon), located in the northern constellation Cygnus the Swan.
天鹅座的Loop看起来是个由炽热气体形成的模糊光环(满月直径的6倍大小)，坐落在天鹅座星群的北方。
The Cygnus Loop appears as a faint ring of glowing gases about three degrees across (six times the diameter of the full moon), located in the northern constellation Cygnus the Swan.
天鹅座的Loop看起来是个由炽热气体形成的模糊光环(满月直径的6倍大小)，坐落在天鹅座星群的北方。
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