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.
介绍了白矮宇宙纪年学研究的基本原理及其在银盘、
团、疏散
团以及银晕年龄确定方面的应用
。
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.
介绍了白矮宇宙纪年学研究的基本原理及其在银盘、
团、疏散
团以及银晕年龄确定方面的应用
。
If the incoming projectile were a white dwarf—a superdense star that packs the mass of the sun into a body a hundredth the size—the residents of Earth would be treated to quite a fireworks show.
如果接近的天体是一颗白矮(whitedwarfstar,一种超密
,
量约等同于太阳,但其体积却不到太阳的百万分之一),那麽地
上的居民将可以看到一场壮丽的烟火秀。
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