Also, as our sun orbits the galactic center it may sweep through areas of interstellar dustiness.

同样，因太阳位于重力中心，它可能会清除有星际尘埃区域。

Right up to the present day, all experimental data, on scales ranging from subnuclear to galactic, are successfully explained by these three theories.

而到目前止，小至次原子核，大至星系，所有实验数据，都能用这三大理论圆满地解释。

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.

介绍了白矮星宇学研究基本原理及其在银盘、球状星团、疏散星团以及银晕龄确定方面应用现状。