In fact, it was the first ocean ever discovered on another celestial body.

事实，是在除地球外的天现的第一个海洋。

First of all, we have the whole moon itself as a celestial body.

首先，整个月球本身就是一个天。

This requires a theory to make specific predictions; for example, if you're theorizing that the Earth revolves around the Sun, you should be able to predict the path of other celestial bodies in the night sky.

就要求该理论做出具的预测；例如，你提出了地球绕太阳运行的理论，那你便能预测夜空中的其他星的运行轨迹。

Celestial bodies have become actors in our myths and folklore.

天成为我们神话和民间传说中的主角。

They observed the movement of celestial bodies and used mathematical equations to predict when these would turn up in a certain region of the sky, and they also named the constellations which were later renamed by the Greeks.

他们观察天的运动，用学方程式预测天时会出现在天空的某个区域，他们还命名了星座，后来星座被希腊人重新命名。

The traditional history of geometry really starts in ancient Greece when you've got these astronomers who are using geometry to understand the movement of celestial bodies through the night sky.

传统几学的历史是从古希腊开始的，那时天文学家用几学来了解天在夜空中的运动。

After discovering some of these moons have actual oceans under their icy surfaces, the European Space Agency and NASA want to know, can these celestial bodies support life?

在现其中一卫星的冰面下确实有海洋之后，欧洲航天局和美国国家航空航天局想要知道，天能否孕育生命？

The data suggests that Saturn's rings are young by celestial body standards, that is possibly a few hundred million years old.

据表明，按照天的标准，土星环还很年轻，可能只有几亿年的历史。

In 1930, from the Lowell Observatory in Flagstaff Arizona, Tombaugh spotted the celestial body we know as Pluto. The discovery made headlines in Streator.

1930年，汤博使用亚利桑那州弗拉格斯塔夫的洛厄尔天文台现了冥王星，一现成了斯特里特的头条新闻。

The mission was groundbreaking and the technology marks the first time humanity was able to move the trajectory of a celestial body.

项任务是开创性的，项技术标志着人类第一次能够移动天的轨道。

In the 50,000 years of human history just 12 of us have traveled from our Earth to walk on another celestial body.

在人类5万年的历史中，我们中只有12人从地球来到另一个天行走。

At this distance, it would take about ten thousand years for Earth to complete just one orbit around the celestial body.

在个距离下，地球围绕盾牌座 UY 公转一周需要约一万年的时间。

A partial eclipse is what you're seeing right here when only part of the luminary of a celestial body's darkened there.

在半影区你将观察到日偏食，只有部分太阳的光芒被遮挡住了。

For the first time ever, we will measurably change the orbit of a celestial body in the universe.

是有史以来第一次我们将可测量地改变宇宙中天的轨道。

Touched, Vishnu decreed that, Dhruva could maybe become a celestial body, visible to all the world forevermore.

毗湿奴感动地宣布，德鲁瓦可能会成为一个天，全世界永远可见。

Astronomers detect and study dark matter by observing its effects on the visible celestial bodies around it.

天文学家通过观察暗物质对周围可见天的影响来探测和研究暗物质。

In astronomy, a syzygy is a rare event when three or more celestial bodies line up.

在天文学中，朔望是指引力系统中三个天配置在一条直线的罕见事件。

Over time and with slightly more careful observation, it became clear that birds were indeed seasonally hitching rides on the wind — but not to nose-dive into lake mud or escape Earth's gravity for far-off celestial bodies.

随着时间的推移和稍加仔细的观察，人们逐渐现，鸟类确实季节性地搭乘风的便车——但不是为了一头扎进湖泥，也不是为了摆脱地球引力飞向遥远的天。

Jupiter and Venus are the two brightest celestial bodies in the nighttime sky after the Moon, though.

不过，木星和金星是夜空中除了月亮以外最亮的两个天。

All celestial bodies exert a gravitational force on nearby objects, pulling them in and out of orbits.

所有天会对附近的物施加引力，将它们拉入和拉出轨道。