银河星云

He found the Milky Way to be composed of innumerable pointlike stars, rather than the unresolved nebulosity that the Ancients likened to a river of milk.

他发现银河是由无数点状星星组成的，而不像古人把令人不解的星云比喻为银白色的河。

That nebulouspatch across the center of the sky called the Milky Way was not acloud but a collection of countless stars.

横跨天央的那片星云不是云朵而是蕴藏着无数恒星的银河星系。

The Large and Small Magellanic Clouds orbit our own galaxy, the Milky Way, and are sufficiently close for detailed study.

大小麦哲伦星云都绕我们所在的星系银河运行，并且离得很近有利于详尽的研究。

The China-Born, M.I.T. and Harvard educated astrophysicist laid the theoretical foundations for spiral structures in galaxies, density waves and star formation. These theories were later validated and became important cornerstones in astronomy.

这位中国出生，曾於麻省理工及哈佛接受教育的天体物理学家，致力建构有关银河、星云与星体盘旋结构的理论基础，这些理论后来也得到世界确认并成为天文研究的重要基石。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。