天文动力学 astrodynamics 天体力学的一个新的分支，研究人类从地球上向空间发射的各种飞行器的运动，又称人造天体动力学。人造天体基本上分为三类：人造地球卫星、月球火箭和行星际飞行器。这三类人造天体在运动过程中出现的力学问题互不相同，从而又各自形成了人造地球卫星动力学、月球火箭动力学和行星际飞行器动力学。
在激光天文动力学任务概念研究方面，必须对由远程航天器上传回的激光进行讯号的测量与处理。
In carrying out the research projects on laser space Programs, it is necessary to process the laser signal sent back from the remote spacecraft.
一名优秀的海盗船长必须了解天文学，通过星相来导航，还必须熟知气象学，对流体动力学也要十分了解，这样他才不会给船上装载过量的战利品。
A good pirate captain had to know the astronomy to navigate by the stars. He had to be acquainted with meteorology and know enough fluid dynamics to make sure he didn't overload his ship with booty.
2010年3月30日，太阳动力学天文台捕捉到的日珥喷发。
A prominence eruption captured by the Solar Dynamics Observatory on March 30, 2010.
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