earth-crossing comet

Applying the results obtained in this paper to the motion of comets,discuss the nongravitational effect on the orbit of some comets.

文中还将研究结果应用到彗星运动上 ,讨论彗星轨道中非引力效应。

the track of a storm, comet, satellite

风暴、 彗星、 卫星的路线

comet finder [ seeker ]

观察彗星用的一种望远镜，寻彗镜

The central portion of the head of a comet.

彗核彗星头部的中心部分

telescopic comet

望远镜观察到的彗星

SHE WORKS FOR COMET AIRLINES.

她在彗星航空公司上班。

Because they found it,

由于他们发现了此彗星，

Schwassman-Wachmann comet

施瓦斯曼－瓦赫曼彗星

When they are farthest away from the sun,

当彗星离太阳最远时，

elliptical coma

【光】呈楠圆的彗星形像差

Comet Tago-Sato-Kosaka

多胡－佐藤－小坂彗星

The nebulous, luminescent cloud containing the nucleus and constituting the major portion of the head of a comet.

彗发星云状的发光云体包括彗核、彗星头部的重要部分

Reasonable threshold value used to segment the individual comet from the comet assay image

彗星实验图像分析中彗星分割阈值的选择

mini-planets called asteroids, and comets.

和叫作小行星的小型行星，以及彗星。

The orbits of these stars were perturbed by the passings of a comet.

这些行星轨道被扫过的彗星打乱了。

When planets are bombarded by asteroids or comets,

当星球被陨石或彗星连续撞击时，

China Builds Up Jupiter Comet Collision Observation Network

中国建立彗星撞击木星观测网

In that way, Pluto acts like a comet.

也就是说，冥王星的行为像一个彗星。

Explanation: Comet McNaught, the Great Comet of2007, has grown a long and filamentary tail.

( 说明：2007年的大彗星，麦克诺特彗星，最近长出了一条长长的丝状尾巴。