Bilingual edition: English is preserved and Chinese follows each unit. Terminology uses the confirmed v20260916 glossary; automated semantic review remains traceable.
中英双语版：英文原文完整保留，中文紧随对应单元；术语采用 v20260916 确认表，自动语义审校结果可追溯。

M33


M33: A Neighboring Galaxy

Spiral galaxy M33 is a mid-sized member of our Local Group of Galaxies. M33 is also called the Triangulum Galaxy for the constellation in which it resides. About four times smaller (in radius) than our Milky Way Galaxy and the Andromeda Galaxy (M31), it is much larger than the many of the local dwarf spheroidal galaxies. M33's proximity to M31 causes it to be thought by some to be a satellite galaxy of this more massive galaxy. M33's proximity to our Milky Way Galaxy causes it to appear more than twice the angular size of the Full Moon, and be visible with a good pair of binoculars. Credit and Copyright: Richard Hammar

螺旋星系M33是本局部星系群中的中等大小成员。M33也因其所在的三角形星座而被称为三角星系。它比我们的银河系和Andromeda星系（M31）小约四倍（半径），但比许多本地矮椭圆星系大得多。由于M33与M31的接近，有些人认为它可能是这个更庞大星系的卫星星系。M33距离银河系较近，因此其视直径超过满月的两倍，可以用一副好的双筒望远镜看到。版权和著作权：Richard Hammar

Sources

源
M33：邻近的星系
 Index

Nebulae
索引星云
 
HyperPhysics***** Astrophysics
HyperPhysics ***** 天体物理学
R Nave
 Go Back
返回