Perhaps the original spiral nebula, M51 is a large galaxy, over 60, 000 light-years across, with a readily apparent spiral structure.
也许旋涡星系m51原本是一个巨大的星系，直径超过6万光年，有显尔易见的旋涡结构。
This NASA image obtained shows the 51st entry in Charles Messier's catalogue, perhaps the original spiral nebula, also catalogued as NGC 5194.
在查尔斯·梅西方尔目录第51条列出的美国宇航局获得的图像表现的也许是最初的螺旋星云，它也被编为新总表（NGC）5194。
When you look up into the heavens with a telescope, you see many nebulae whelloch are like, or approximately like, the perfectly balanced spiral nebula whelloch you see edgewise in Fig. 23.
当你用千里镜不雅测天空，你瞥见很多与图示23中边沿朝前的完善平衡的螺旋星云相仿或大致相是的星云。
It is located 3, 800 light-years away from Earth, inside the Orion spur — the same partial spiral arm of the Milky way where our solar system is located. The nebula is nearly 240 light-years across.
它跨度近240光年，位于猎户座旋臂里，离地球3,800光年远；而我们的太阳系也在银河系同样的旋臂中。
Menkhib and the California Nebula are about 1,800 light-years away from Earth and are located within the same spur of the Orion spiral arm of the Milky way galaxy as Earth.
Menkhib和加州星云大约距离地球1800光年，并在对银河系的地球银河系猎户座旋臂位于同一方向。
Menkhib and the California Nebula are about 1, 800 light-years away from Earth and are located within the same spur of the Orion spiral arm of the Milky Way galaxy as Earth.
Menkhib和加州星云大约距离地球1800光年，并在对银河系的地球银河系猎户座旋臂位于同一方向。
Menkhib and the California Nebula are about 1, 800 light-years away from Earth and are located within the same spur of the Orion spiral arm of the Milky Way galaxy as Earth.
Menkhib和加州星云大约距离地球1800光年，并在对银河系的地球银河系猎户座旋臂位于同一方向。
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