Messenger of the gods is what mercury means.

意思是上帝信使。

Now Mercury has quite a complex orbit.

公转轨道有点复杂。

It orbits the Sun once every 88 days.

公转周期是88天。

Mercury's nearness to the sun makes it an especially difficult planet to study.

离太阳很近，这让研究难度很高。

This means a year on Mercury is shorter than a day on the planet.

导致一天比一年要短。

That first image ever acquired from orbit around Mercury was amazing.

从环绕轨道上获得第一张图像令人惊。

But you can calculate Mercury's orbit very precisely using only Newton's laws of gravity.

但是，只要用牛顿引力定律们就能精确地算出轨道。

The only other spacecraft to visit Mercury was NASA's Mariner 10, which flew past the planet in the mid-1970s.

另外一个访问过航天器是NASA麦仑娜10号。它是上世纪70年中期经过。

Next, we are checking out a time-lapse tour of the planet Mercury like we've never seen before.

接，们要看看延时之旅，这是们从未见过。

Dipping below the surface, we can only infer what Mercury's internal structure is like.

表面之，们只能对内部结构进行推测。

This pioneering voyage has led to a completely new idea of how Mercury may have formed.

这次开创性航行让们对形成过程有了全新认识。

It's the second smallest planet after Mercury yet has the largest volcano in the Solar System, Olympus Mons.

它是仅次于第二小行，但有太阳系中最大火山奥林帕斯山。

The Mercury 7 prototype has arrived for testing.

计划模拟雏形机到了 预备开始测试。

We're finding planets bigger than Jupiter, smaller than mercury.

们找到了比木大，比小行。

A clue to understanding these strange features was found in Mercury's chemistry.

人们在化学成分中发现了理解这些奇怪特征线索。

Well, the hill sphere for Mercury about 175000 km, which is much smaller than the hill spears of other planets.

山球大约175000千米，比其他行山矛要小得多。

There is intense gravitational pull from the sun, as well as extreme solar radiation.

太阳对引力作用很大，此外太阳辐射也很高。

Remember earlier, when I said Mercury's orbit is highly elliptical?

还记得之前说过轨道非常扁长吗？

But 150 years ago, astronomers noticed something strange about Mercury's orbit.

但在 150 年前，天文学家发现运行轨道有点奇怪。

In 14 days the Mercury 7 will be here for training.

最多再过14天 计划7名成员就要受训了。