Ultimately, the Earth's nations must work together to combat this extraterrestrial threat.

最终, 地球上的各个国家必须共同努力应对这外星威胁。

No, Scott didn't turn into an extraterrestrial.

不，斯科特并没有变成外星人。

And it would be tragic if we killed the first extraterrestrial life we found.

如果我们杀死了我们现的首个外星命，那可就悲剧了。

Nothing is known about how extraterrestrials might take in information.

关于外星人如何获取信息，我们一无所知。

This doesn't mean that we discovered extraterrestrial life on venus far from it.

这并不意味着我们在遥远的金星上现了外星命。

SETI stands for the Search for Extraterrestrial Intelligence.

SETI是“搜寻地外文明”的英文简写。

We use it for everything from Skype to the search for extraterrestrial life.

另一個系統Twister亦同，諸如此類。

In short, this ancient water could hold gas, microbes and hints about extraterrestrial life.

总之，这种古老水源可能包含气体、微物和与地外命有关的东西。

Naturally, it raises more questions about the possibility of some kind of extraterrestrial life there.

当然，它提出了更多关于地外命存在可能性的问题。

People could be shocked at such a sight and mistake a sprite for an extraterrestrial object.

人们可能会对这样的景象感到震惊，误以为“精灵”是外星物体。

Potential explanations have been offered for the truly mysterious disappearances, including paranormal activity and extraterrestrial encounters.

对于这的真实神秘事件可能的解释是这有灵异活动，以及他们遭遇了外星人。

So if an extraterrestrial civilization wised up and stopped polluting, we might still see the effects.

所以如果外星文明识破我们的伎俩, 停止污染, 我们仍然会看到效果。

Some people think they could be a form of communication from extraterrestrial life trying to contact us.

一些人认为该信号可能是外星物的一种交流方式，他们在试图联系我们。

The exact proportion of locally sourced versus extraterrestrial water is still a topic of argument among scientists.

内水和外来水的准确比例一直是科家们争论的话题。

Studying the earth-like planet could help in the hunt for extraterrestrial life

研究类似地球的行星有助于寻找外星命。

THE space race between America and the Soviet Union was as much about ideological one-upmanship as extraterrestrial exploration.

美国和苏联的空间竞争是关于外星探索上谁高人一等的问题。

Their precise, unique frequencies were indicated so that intelligent, extraterrestrial lifeforms could use them to find the Earth.

它们的精确度、独特的频率都标示了出来这样有智慧的外星命形式就可以通过它们找到地球。

One hypothesis that has gained popularity among paleontologists is the role of extraterrestrial impacts in shaping the Mesozoic area.

有一种假说在古物家中越来越受欢迎，那就是外星撞击在塑造中代地区中所起的作用。

If that is the case, extraterrestrial life could exist in many more locations than we even imagine.

如果真是这样的话，那有外星命存在的地方将远远超出我们的想象。

Last year, McTier's advisor challenged her to find something else on exoplanets: evidence of extraterrestrial mountains.

去年，麦克蒂尔的导师给了她一项挑战性任务：在太阳系外行星上寻找其他东西：外星山脉的证据。