The one that surrounds and orbits Earth.

这是一个地球垃圾堆。

It would take about a year before thousands of satellites orbiting the planet would come crashing down and burn up in the atmosphere.

大约一年之后，成千上万颗地球运行卫星会坠毁并在大气层中燃烧。

A small electronic device called thin set gathers the data to shed light on these questions designed to orbit the Earth.

一种名为薄层小型电子设备收集数据，以阐明这些地球运行问题。

And this collision was so massive that it launched material into orbit around the Earth.

这个撞击是如此沉重，使得抛出物质进入了地球轨道。

The atmosphere around the Earth is necessary for all living things.

地球空气对一切生物来说，是不可缺。

The turning motion of Earth around this line causes day and night.

地球这条线，所以才有了白天和黑夜。

Together, these jungles form an emerald band that circles our globe.

这些雨林连结起来，形成一条地球翡翠色绿带。

Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles in our solar system.

即使是一台放置在地球轨道上望远镜--如非常成功哈勃望远镜--也因为太阳系中尘埃微粒而无法胜任。

But one or more of them often end up, according to the simulations, in what are known as Trojan orbits, where they followed the proto-moon endlessly around Earth.

但，根据计算机多次模拟，其中一个多个卫星往往停留在被称为特洛伊星座轨道上而终结。这些卫星在那儿伴随永无休止地地球原月。

There is a new mission, a new NASA mission called SBG — it stands for Surface Biology and Geology — which are hyperspectral satellites that will orbit the entire planet.

NASA 有个新任务，叫作“SBG（地表生物学与地质学）”，它是将整个地球高光谱一些卫星。

When this happens, sunlight shines onto the Earth and passes through the atmosphere that is all the way around the edge of the Earth.

届时，阳光照射到地球表面并穿过一直在地球边缘大气层。

We turn now to our Bill Weir, who explains how the astronomical number of manmade objects orbiting the planet has turned some space officials compunction into action.

现在让我们向我们记者比尔·韦尔，他解释了地球轨道人造物体数量增加如何将一些航天官员不安化为了实际。

The basic thinking was that the Moon, Sun, and stars were affixed to crystal spheres that spun around the Earth at different rates.

他们基本想法是，月亮、太阳和星星都被固定在一个以不同速率地球水晶天球上。

They said the area of low orbit around the earth could become unusable in the future unless there are plans to tackle the junk.

他们称，除非制定计划清除太空垃圾，否则地球低轨道区域将来可能变得无法使用。

Yes. In my question I asked who first came up with the idea that the Earth revolves around the Sun.

是。在我问题中，我问谁第一个提出地球太阳想法。

The moon is halfway through its orbit around the Earth, and is now on the opposite side of the Earth from the sun.

月亮地球轨道已经过半，现在它到了地球与太阳另一面。

A ring of debris formed around the Earth, sort of like Saturn's rings, unlike Saturn's rings that all collected into our moon.

地球形成碎片环，有点像土星环，不像土星环都聚集在我们卫星上。

Together, tethers around Earth and Mars could provide the rapid and cost-efficient transportation backbone that would make space travel affordable.

地球和火星系绳可以提供快速且经济交通枢纽，这将使太空旅行能被负担得起。

Man, the look on those guys' faces when I told them that the sun didn't revolve around the earth.

天啊，当我告诉他们太阳并不是地球时候，他们表情简直绝了。

Such asteroids have orbits larger than Earth's own orbit around the sun, and their paths cross with Earth's.

这些小行星轨道比地球太阳轨道大，且它们轨道与地球轨道交叉。