A Russian space capsule is currently orbiting the Earth.

一个俄罗斯太空舱目前正环绕地球飞行。

Our galaxy is so huge that dozens of lesser galaxies scamper about it, like moons orbiting a giant planet.

我们的银河系实在庞大，吸引着数十个较小的星系环绕着它奔跑，恰似环绕巨大行星旋转的卫星。

But such transits have paved the way for what might prove to be one of the most vital breakthroughs in the cosmos—detecting Earth-sized planets orbiting other stars.

但是这样的凌日现象已经为被证明可能是宇宙中最重要的突破之一的说法铺平了道路，这个说法即找到那些围绕其他恒星轨道公转的和地球大小相似的行星。

That's about how high an object would have to be orbiting straight up from the equator to constantly remain directly above the exact same spot on the rotating planet Earth.

这大约是一个物体从赤道沿轨道垂直向上运行的高度，这样它就可以一直保持在地球同一地点的正上方。

Denverites often kvetch about sleep disrupted by the Denver Police Department's helicopter orbiting overhead.

丹佛人经常抱怨他们睡觉的时候会受到头顶上方盘旋的丹佛警察局的直升飞机的干扰。

Likewise, when in outer space, when you are orbiting the Earth, people are always floating around in these space stations.

同样，在外太空中，当您绕地球运行时，人们总是在这些空间站中四处漂浮。

It will nevertheless resemble us in that it should communicate with its fellows, be interested in the Universe, live on a planet orbiting a star like our Sun.

但是它仍然与我们相似，因为它应该也与它的同伴交流，对宇宙感兴趣，生活在一个行星上，这个行星也绕着像是太阳一样的恒星运转。

She is orbiting the sun as the asteroid 216 Kleopatra.

编号为216 Kleopatra 的小行星正绕着太阳运行。

We have an orbiting electron but a stationary nucleus.

我们有一个在轨运行的电子和一个静止原子核。

Around 60 countries now have satellites orbiting the Earth.

现在有60个国家有卫星在地球轨道上。

Astronomers name planets found orbiting stars with a letter.

天文学家通过添加一个字母来为其周围的行星命名。

This would hinder operations of low-Earth orbiting, or LEO, satellites.

这将阻碍低轨道地球卫星（LEO）的运转。

The technique can only detect planets orbiting close to their stars.

目前的探测技术只能检测到距离类日恒星较近的卫星。

But only occasionally is more than one found orbiting any particular star.

但是，发现一颗特别恒星被多于一颗行星围绕的情况却很不常见。

The debris is a collision threat to operational spacecraft orbiting Earth.

这些碎片对于环地球轨道的航天器操作来说是一个潜在的威胁。

These wandering stars, we now know, are the other planets orbiting the sun.

我们现在知道，这些漂移的行星是其他围绕太阳运行的行星。

Just as most orbiting planets spin on their axes, so asteroids also rotate.

正如其它沿轨道运行的行星自转一样，这些小行星也有自转。

For habitable planets orbiting brighter, hotter stars, the search will take longer.

对于寻找适合居住的绕着更亮，更热的恒星转的行星，将会搜寻更长时间。

Looking for planets orbiting red dwarfs is easier because the stars are less massive.

寻找围绕红矮星运转的行星则相对容易，因为恒星的体积较小。

How many times have you seen a star "with wings" that appears to be orbiting the sun?

你有多少次看到一个有“翅膀”的星星在绕太阳运行？

NASA would of course prefer to keep some crew aboard the orbiting lab, Suffredini added.

当然NASA更愿意在轨道实验室保留一些人员，苏弗雷迪尼补充说。

Thales Alenia is building the next set of 66 Iridium low-Earth orbiting (LEO) satellites.

泰雷兹阿莱尼亚公司正在建造66颗下一代低轨道(LEO)铱星。

The Kepler orbiting observatory was launched with a simple mission - to find other Earths.

随着一项简单的任务，寻找其他“地球”，开普勒轨道天文台启动。

He wrote that some of the tablets indicated the probable utilization of orbiting craft as well.

他写到，一些石板也指出轨道飞行器的可能利用。

It was laden with food, fuel, spare parts, and much needed supplies for our orbiting outpost.

它满载食物，燃料，零部件以及环形轨道前哨急需的物资。

Still, we persevered and we eventually were able to spot the planets orbiting each massive star.

尽管如此，经过我们的坚持不懈，我们最终能发现每颗大质量恒星的行星。

Two of these sets of observations were made from the Earth, one from an ESA spacecraft orbiting Mars.

其中两组的观测来自于地球，一组来自于火星轨道的ESA航天器。