These disks are the remnants of planetary formation.

这些圆盘是行形成的剩余物质.

Actually, 2008-nq sub-17 is a planetary body.

事实上 2009-NQ SUB-17只是颗行。

So some planetary systems are aligned just so.

所以有些行系就是这样排列的。

Jay Melosh studies planetary impacts at Purdue University.

在普渡大学研究行撞击的杰伊·梅洛什说到。

It's going to some other planetary system.

而是去了其它系。

Mercury brushes against another planetary embryo.

水与另颗胚胎期行擦肩而过。

This explosive planetary drama demands a dynamic human response.

这场爆炸性的地球戏剧需要人类作出积极的反应。

So, what do you eat on the planetary health diet?

那么，所谓对地球健康的饮食方式是以什么为食呢？

And that creates an interesting problem in understanding planetary evolution.

引出了个关于行演化的有趣问题。

So planetary nebulae really may owe their existence to planets!

所以行状云的存在可能真的要归功于行！

So planetary astronomer, Heidi Hammel, submits a proposal to NASA.

行天文学家海蒂∙海莫向NASA递交了项建议。

The timing issue has everything to do with planetary mechanics.

这时间安排与行力学有很大关系。

Or is the planetary model of the atom doubly wrong?

或是行原子模型又错了?

A triumph for humanity in the name of planetary defense!

以行防御的形式实现了人类的胜利！

The study's lead writer was David Kring of the Lunar and Planetary Institute in Houston.

该研究的主要作者是休斯顿月球与行研究所的大·克林。

The ocean also acts as a giant planetary air conditioner.

海洋还是台巨大的空调，调节着地球的温度。

The planetary safety boundary of 1.5 degrees has not been reached.

地球还没有达到1.5度的安全界限。

The rockets will be used to study physics and planetary science.

这些火箭将用于研究物理学和行科学。

And we see all the stars surrounded by completed planetary systems.

我们也知道所有恒都由完全形成的行系统环绕。

Working on the origin of planetary systems is like being a detective.

研究行系统的起源就像做名侦探。