Between May and July of last year, Swift took 330 ultraviolet images of our closest spiral neighbor, the galaxy M31 in the constellation Andromeda.
去年五月到七月间，雨燕卫星共为距离我们最近的星系——来自仙女座的螺旋星系m 31，拍摄了330张紫外线图像。
The nearest major spiral galaxy to the Milky Way, Andromeda, named after its constellation and also known as M31, is the largest galaxy in the Local Group of Galaxies.
仙女星系是距银河最近的巨型旋涡星系，它以其所在星座仙女座命名，同时又被称为M31，它是本星系群中最大成员。
Also known as the Andromeda Galaxy, M31 is more than 220,000 light-years across and lies 2.5 million light-years away.
M31星系也被称为仙女座星系，它跨越了220 000光年，距我们2百50万光年。
The Square of Pegasus is a great jumping off point for finding the famous Andromeda galaxy, also known to astronomers as M31.
天马广场是找寻仙女座星系的重要起点，仙女座星系又被天文学家们称为M31。
Observational properties of the largest Local Group spiral M31(Andromeda galaxy) are presented.
介绍了本星系群中最大的旋涡星系M31（仙女星系）的基本观测性质。
M31 (Andromeda galaxy) is the biggest spiral in the Local Group.
M31(仙女星系)是本星系群中最大的旋涡星系。
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。
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。
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