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1·They showed that the Andromeda nebula lay far outside our Milky Way Galaxy.

测量表明，仙女座星云远在我们的银河系之外。

2·For example, Messier object M1 is the CRAB NEBULA and M31 is the ANDROMEDA GALAXY.

例如，梅西耶天体m 1是蟹状星云，而M31是仙女座星系。

3·Many of the brightest deep sky objects also have popular names by which they're often referred to, such as Andromeda Galaxy, North America Nebula, Blinking Planetary, and so on.

那些最亮的深空天体还有常用“俗名”，比如“仙女座大星系”、“北美洲星云”、“闪耀星云”等等。