A "deep sky object" is any object outside our solar system 'except' a star; the name is a "collective term" used to refer to such things as galaxies, star clusters, nebulae, and so on.
“深空天体”泛指太阳系以外除了恒星的任何天体，它是一个包括星系、星团、星云等等天体在内的集合名词。
A "deep sky object" is any object outside our solar system 'except' a star; the name is a "collective term" used to refer to such things as galaxies, star clusters, nebulae, and so on.
“深空天体”泛指太阳系以外除了恒星的任何天体，它是一个包括星系、星团、星云等等天体在内的集合名词。
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