1、[天]银河星云
... dark nebula暗星云 galactic nebula银河星云 glow发出柔和稳定的光 ...
2、银河内星云
... galactic equator 银道 galactic nebula 银河内星云 galactic plane 银道面 ...
3、银河星云
...Galaxy (银河)galactic nebula(银河星云)satellite(卫星) ...
galactic c nebula银河星云;银河内星云
luminous galactic nebula[天] 亮银河星云
dark galactic nebula暗银河星云