This research in science lab orbits the earth once every 90 minutes.

这项在科学实验室进行的研究每90分钟绕地球一周。

NASA has satellites orbiting the earth that measure tree heights from space.

美国国家宇航局有绕地球运行的卫星，从太空中测量树的高度。

The answer lies in the way that the moon orbits the earth.

答案就在于月亮环绕地球运动的方式。

There are some satellites and aerial that can orbit the earth quicker in 84 minutes.

还有一些卫星和天线可以在84分钟内更快地绕地球运行。

Ten years ago, two satellites collided adding to the millions of pieces of debris that`s orbiting the earth.

10年前，两颗卫星相撞，增加了环绕地球的数百万块碎片。

The crew, consisting of a pilot and three passengers, are due to spend eight days orbiting the earth.

机组人员包括一名飞行员和三名乘客，他们计划将绕地球飞行8天。

We already have twenty-four Navstar satellites orbiting the earth, making up what is called the Global Positioning System.

我们已经有24颗环绕地球运行的导航卫星，组成了人们所说的全球卫星定位系统。

Because of the way that the moon orbits the earth, sometimes the sun lights up different parts of it.

由于月球绕着地球转，有时太阳光就会照到不同的地方。

The river flows South, the moon orbits the earth.

江南流， 月绕地。

We named Laika after the Soviet dog who was the first animal to orbit the earth.

我们以第一只绕地球运行的动物苏联狗的名字命名莱卡。

She spent 71 hours orbiting the earth, which was more time than all  US astronauts combined.

她花了 71 个小时绕地球运行，这比所有美国宇航员的时间加起来还多。

43. Newton's observation, that the moon orbits the earth due to gravity, has shaped modern astronomy.

43. 牛顿的观察，即月球因重力绕地球运行，塑造了现代天文学。

It is also exciting for her parents, immigrants from Guatemala who can proudly say their daughter helped build a satellite orbiting the earth.

这也让她的父母感到兴奋，来自危地马拉的移民自豪地说，他们的女儿帮助建造了一颗绕地球运行的卫星。

Short space trips will develop first, then space hotels will orbit the earth where it will be possible to have a longer vacation.

短途的太空旅行会率先发展起来，太空旅馆会环绕在地球周围更有可能进行长途旅行的地方。

The agencies say space junk orbiting the earth must be cleaned up to make room for new satellites launched by private companies and other groups.

这些机构表示，地球轨道上的太空垃圾必须要得到清理，这样才能给新卫星腾出空间。新卫星可能是私企发射的，也可能是组织发射的。

It's a cruise ship style space station that would orbit the earth and act as a space port for researchers, astronauts and tourists on their way to and from earth.

这是一个游轮式的空间站，它将绕地球运行，并充当研究人员、宇航员和游客往返地球的太空港。

And so it wasn't a surprise that when astronauts first started the Mercury program, such as John Glenn orbiting the earth, that charts and maps that he was using were in Futura.

所以也不奇怪为什么当宇航员第一次启动水星计划时，例如John Glenn 绕地球轨道运行，他使用的图表和地图都是用Futura的。

The greatest concern the authors raise is space debris — pieces of " junk" that orbit the earth, with the potential to cause serious damage if they collide with operational units, including the ISS.

作者提出的最大担忧是空间碎片——环绕地球运行的“垃圾”碎片，如果它们与包括国际空间站在内的运行单位相撞， 可能会造成严重破坏。