水母星云约5000光年远。
常常是暗淡和难以找到的水母星云，被拍进这张迷人的假彩色望远镜照片。
Normally faint and elusive, the Jellyfish Nebula is caught in this alluring, false-color, telescopic view.
也被称作阿贝尔21，水母星云是双子座中一个1500光年远的年老行星状星云。
Also known as Abell 21, this Medusa is an old planetary nebula some 1, 500 light-years away in the constellation Gemini.
以上梅杜萨星系的中心地带，水母星云与希腊神话女蛇妖同名。梅杜莎是在一个由潮汐尾星系之间的碰撞形成的。
Located above the center of the Medusa galaxy, the 'hair' - made of snakes in the Greek myth - is a tidal tail formed by a collision between galaxies.
象辫子一样层层卷绕的发光丝状气体暗示了这个星云的俗名：水母(美杜萨)星云。
Braided, serpentine filaments of glowing gas suggest this nebula's popular name, The Medusa nebula.
象辫子一样层层卷绕的发光丝状气体暗示了这个星云的俗名：水母(美杜萨)星云。
Braided, serpentine filaments of glowing gas suggest this nebula's popular name, The Medusa nebula.
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