We also describe the basic principle of white dwarf cosmochronology and its application in defining the age of the Galactic disk, globular clusters, open clusters and Galactic halo.
介绍了白矮星宇宙纪
学研究的基本原理及

盘、球状星团、疏
星团以及
晕

定方面的应用现状。
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欧
的男人决定去死 And is surrounded by 150 globular clusters and a halo of dark matter and dwarf galaxies, some of which it's eating, all of which can be seen by other galaxies in our Local Group like Andromeda and Triangulum.
有150个球状星
、一个暗物质晕和一些矮星系正绕着这个黑洞转,而这些矮星系中的一部分正在被黑洞吞噬,这都可以在我们的本星系群中被观察到,比如仙女座和三角座星系。
Consisting of mainly ancient stars from around 12 billion years ago, the Segue 1 contains around 1,000 star systems. Astronomers aren't sure if it's a true galaxy, or even a globular cluster of stars, because it doesn't fit the profile.
Segue 1 主要由大约 120 亿年前的古老恒星组成, 包含大约 1,000 个恒星系统。 天文学家不确定它是否是一个真正的星系, 甚至是一个球状星
, 因为它不符合轮廓。