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年学研究的基本原理
其在
、
星团、疏
星团以

年龄确定方面的应用现
。
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男人决定去死 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
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
星系, 甚至是一个球状星
, 因为它不符合轮廓。