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。
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。
Also known as the Cygnus Loop, the Veil Nebula now spans nearly 3 degrees or about 6 times the diameter of the full Moon.
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