White Dwarf GMAT

1.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、团、疏散团以及银晕年龄确定方面的应用。

2.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，一种超密恒，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。