对于天文的计算，天被指定为从一个参照点开始的天的数量——不必识别年、月或者星期。
For astronomical calculations, days are specified as the number of days from a reference point — you don't need to identify years, months, or weeks.
科学家正试图把天文学界各种迥然不同的观点汇集起来。
Scientists are trying to pull together disparate ideas in astronomy.
当然，我对天文和历法的功能很感兴趣。
Certainly, I am interested in astronomical and calendar function.
即使在没有冰川的时期，天文周期也会对地球的气候产生影响。
Astronomical cycles have an effect on Earth's climate even during periods when there is no glaciation.
那意味着我们最近的邻居星球离我们大约有100光年远，从天文学的角度来说，这几乎是一墙之隔。
That means that our nearest neighbours are perhaps 100 light years away, which is almost next door in astronomical terms.
请听天文课讲座的部分内容。
让我们想想光污染以外的问题，那只是一种科技进步为天文研究带来的不便。
Let's think beyond light pollution; that's only one kind of a technological advance that has interfered with astronomical research.
我们将迈入天文学的新时代。
笛卡儿从哥白尼、伽利略和其他科学家的新物理学和天文学中获得了灵感。
Descartes received his stimulus from the new physics and astronomy of Copernicus, Galileo, and others.
天文学家们发现了一个遥远的星系。
甚至是小型的月食都会令他兴奋，而且应该会令任何一位业余的天文爱好者着迷。
Even small eclipses get him juiced and should be fascinating to any amateur astronomer.
天文学的例子还有哪里出错呢？
天文单位是宇宙的标尺，是我们今天测量宇宙的基础。
The AU is a cosmic measuring rod, and the basis of how we scale the Universe today.
讽刺的是，我们现在所在的这栋楼，离我们天文台不远的那座天文楼，竟然有未屏蔽的灯。
Here's an irony, the building we are in now, the astronomy building not far from our observatory, has unshielded lights.
当时的智慧来自于二世纪的天文学家托勒密，他的复杂天空体系把地球置于所有天体运动的中心。
The wisdom of the day was derived from Ptolemy, an astronomer of the second century, whose elaborate system of the sky put Earth at the center of all heavenly motions.
当他教他们天文学的时候，他不仅仅教了行星的名字，还用利用这些名字来教神话学。
When he was teaching them astronomy, he didn't just teach them the names of the planets—he used it as a way to teach mythology.
在智利的欧洲南方天文台，由西蒙·克拉克领导的天文学家团队发现了宇宙中的一个飞行物。
A team of astronomers working at the European Southern Observatory in Chile, led by Simon Clark, spotted a flyer in the cosmos.
当天文馆的天空与外面的天空相匹配时，鸟儿们就朝着它们正常迁徙的方向飞翔。
When the planetarium sky matched the sky outside, the birds fluttered in the direction of their normal migration.
为了验证这个想法，这些在夜晚迁徙的候鸟被关进笼子里，并且在它们的迁徙期间被放置在一个天文馆的地面上。
To test the idea, caged night-migrating birds were placed on the floor of a planetarium during their migratory period.
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