The survival of Sagittarius dwarf galaxy

The Sagittarius dwarf spheroidal galaxy, the closest satellite galaxy of the Milky Way, has survived for many orbits about the Galaxy. Extent numerical calculations modeled this...人马座矮椭球星系（Sagittarius dwarf spheroidal galaxy）是距离银河系最近的卫星星系，其在环绕银河系的多次轨道运行中存续至今。相关数值计算已对其开展了建模工作……