矮星

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基本原理及其在银盘、球状团、疏散团以及银晕年龄确定方面应用现状。

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.

如果接近天体是一颗白矮（whitedwarfstar，一种超密恒，质量约等同于太阳，但其体积却不到太阳百万分之一），那麽地球上居民将可以看到一场烟火秀。