But why does then the moon orbit the earth?
那么为什么月亮绕着地球转呢？
India launched a satellite into moon orbit in 2008, but had to abandon it a year later after communication links snapped.
印度2008年发射了月球卫星，但是由于一年之后与地面失去联系，不得不放弃。
India launched a satellite into moon orbit in 2008, but had to abandon it nearly a year later after communication links snapped and scientists lost control of it.
印度在2008年将一颗卫星发射至月球轨道，不过在一年后，由于卫星通讯突然中断，科学家失去了对其控制而不得不将之抛弃。
U.S. government officials are set to approve a mission by privately-held space company Moon Express to travel outside of Earth's orbit in late 2017.
美国政府官员将批准私营太空公司月球快车在2017年底执行的一项脱离地球轨道的任务。
One problem with the collision hypothesis is the question of how a satellite formed in this way could have settled into the nearly circular orbit that the Moon has today.
碰撞假说的一个问题是，以这种方式形成的卫星是如何在月球现在的近乎圆形的轨道上运行的。
The satellite was launched into the orbit around the moon.
卫星被射入环绕月球的轨道。
Because the moon's body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot where it could send signals to the spacecraft and to Earth.
由于月球阻碍了与探测器的直接无线电通信，中国首先必须把一颗人造卫星送入月球轨道上的一个点，人造卫星可以从那里向航天器和地球发射信号。
However, if an eclipse occurs while the Moon is on the far side of its elliptical orbit, it appears smaller than the Sun and can't completely cover it.
但是如果日食出现在月球处于它的椭圆轨道远地点的时候，它显得比太阳小而无法完全遮盖住太阳。
A Chinese space probe has successfully entered orbit around the Moon eight days after it was launched.
中国一座太空探测器在发射八天之后成功进入月球周围的轨道。
What does the orbit of the Moon around the Sun look like?
月球绕太阳的轨道是什么样的呢？
When America returns to the moon, four astronauts will ride in Orion to lunar orbit and then all of them will move into the Altair lunar lander to go explore the moon.
当美国重返月球时，四位宇航员将乘坐猎户飞船飞向月球轨道，然后全部进入牛郎星登月器去探测月球。
Then Newton used his calculus to show how an apple is pulled to the earth and how the earth pulls the moon into an orbit, and how these pulls are the same as the sun’s on the planets.
牛顿用他的微积分，演算出了苹果如何掉地上的；地球如何拽住月亮，让月亮绕着轨道跑；太阳如何用这种方式拽着各个行星。
The Moon is in orbit around the Earth at an approximate distance of 377, 000 km (234, 000 miles).
月亮所运行的轨道距离地球约为377,000公里（234,,000英里）。
This ability is especially useful when scientists are, say, planning to put a satellite in orbit or charting the course of the moon.
当科学家计划将一颗人造卫星送上月球轨道时，这种计算能力便显得尤为重要。
The spacecraft cameras provide the most detailed images of the moon ever taken from orbit.
航天相机从轨道拍摄了最详尽的月球照片。
NASA's Gravity Recovery and Interior Laboratory, or GRAIL, mission spacecraft will orbit the moon before landing on the lunar surface.
美国航天局的重力恢复与内部实验室计划，又称“圣杯”号月球探测器将首先环绕月球轨道飞行，然后在月球表面着陆。
Due to the moon's titled and elliptical orbit around Earth, the moon seems to return to the same place in the sky 51 minutes later each day, on average.
因为有卫星的头衔，而且沿椭圆形轨道环绕地球运行，月亮似乎每天平均51分钟返回到天空的同一地点。
This NASA unmanned spacecraft launched Jan. 7, 1998 on a mission to orbit the moon in search of signs of water ice and other minerals in permanently shaded craters at the lunar poles.
这艘NASA无人驾驶飞船于1998年1月7日发射，使命是围绕月球飞行并在月球两极永远在阴影中的火山口里寻找水冰以及其它物质存在的迹象。
Rocket Men: Saturn V, which carried the Apollo 11 Moon mission, climbs toward orbit after lift-off in a photograph taken from a plane monitoring the launch.
执行阿波罗11号登月任务的土星5号正在飞向自己运行的轨道，此照片由负责监测发射的飞机拍摄。
Tonight's rare lunar occurrence, when Earth's natural satellite is only a mere 356, 575 kilometers out in orbit, brings the moon to its closest position to Earth.
今天晚上地球的天然卫星月球在其轨道上离地球仅有356575公里远，这使得月球处于离地球最近的位置上，而这也是极为罕见的有关月球的事件。
It takes 29 days for the moon to rotate around its axis, and it also takes 29 days for the moon to orbit around the Earth.
月球自转一周需29天，围绕地球旋转一周也同样需29天。
The Cassini spacecraft snapped this shot in February as it swooped past Calypso, which trails behind the larger moon Tethys in roughly the same orbit around Saturn.
这张照片是在今年2月份，卡西尼号宇宙飞船从卡里索普上方快速飞过时拍摄到的。 卡里索普星的轨道在土星第二大卫星特提斯的后方，二者围绕土星旋转的轨道大致相同。
After all, Newton invented calculus in order to solve a physics problem: the orbit of the moon and planets in the solar system.
(毕竟，牛顿发明了微积分本来就是为了解决一个物理问题通常你可以申请在：太阳系中的月球和行星轨道问题)。
But if you take data on ten thousand earthquakes, you can show there is a significant correlation between minor quakes and where the moon is in its orbit.
但是如果你研究一万例地震，你可以发现在地震和月球在其轨道上所处的位置是有微小的联系的。
Orbit of the Moon, and we see the Earth.
月球的轨道，以及我们看到的地球。
The crane now tried to drag the moon down out of its orbit.
起重机现在正拼命将月亮拖离它的轨道。
A big moon likely could have helped stabilize Mars' orbit, but the planet has just two small moons, most likely captured asteroids, that don't have much gravitational muscle.
一个月亮很可能帮助稳定火星的轨道，但是它也有两个小的卫星，很可能是被捕获的小行星，他们根本就没有足够的引力能束缚。
Nearly three days after launch, the braking engines fired and the Apollo 8 capsule went into orbit around the moon.
发射后差不多三天时间，制动火箭启动了，阿波罗8号飞船进入了月球轨道。
Nearly three days after launch, the braking engines fired and the Apollo 8 capsule went into orbit around the moon.
发射后差不多三天时间，制动火箭启动了，阿波罗8号飞船进入了月球轨道。
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