如果此刻有外星人在此登陆，你会怎么做？
未来威胁人类的不是外星人，也不是罕见的疾病，而是气候变化。
It's neither aliens nor a rare disease that will threaten the human race in the future, but climate change.
这项最新发现将帮助天文学家在寻找外星生命过程中辨别两种来源不同的甲烷。
The latest research will help astronomers distinguish between the two sources of methane in their search for extraterrestrial life.
奥特曼是一个来自外星球的、身穿银衣头戴面具的英雄，目的是拯救地球免受巨大怪物的袭击。
Ultraman, a silver-suited masked hero, comes from outer planet to save the Earth from gigantic monsters.
“那是什么？”外星人指着一双筷子问道。
"What are those?" asked the alien, pointing to a pair of chopsticks.
他说的最后一句话可能会触动人们的心灵：“我还年轻，所以我可以学着像外星人一样思考。”
His last sentence may touch people's hearts: "I am young, so I can learn to think like an alien."
这些有趣的花看起来像一群橙色的小外星人一起走在岩石上，所以有时它们被称为快乐外星人草。
These amusing flowers also look like little orange aliens walking together over the rocks, so sometimes they are nicknamed the Happy Alien Plant.
美国国家航空航天局科学家克里斯·麦凯说：“我们可能会在太空中发现外星人，并与他们交谈。”
NASA scientist Chris Mckay says, "We may find aliens in space and talk with them."
当然，很有可能外星生命先发现我们。
Of course, there is always the chance that extraterrestrial life will find us first.
超手性光束还可能有助于寻找外星生命。
Superchiral light could even aid the search for extraterrestrial life.
真有点像和来自外太空的外星人接触一样！
It would be a bit like being in touch with an alien from outer space!
回答这种问题的标准方法着重于寻找外星文明。
The standard approach to answering that question focuses on the search for extraterrestrial intelligence.
我们用更精巧的方法继续聆听外星人发出的信号。
So we continue to listen out for the signal from aliens through ever more ingenious methods.
有了这个望远镜，探寻外星生物也有了一些希望。
Finding alien life might also be possible with such a telescope.
我们没有发现外星生命，很显然他们也还没发现我们。
We haven't found extraterrestrial life, and apparently it hasn't found us.
近几个月来，搜寻外星生命的活动获得了很大的进展。
The search for extraterrestrial life has gained momentum in recent months.
但这是否意味着我们应该放弃寻找外星人的尝试呢？
But does it mean we should give up our attempts at finding ET?
当那些外星人终被找到的时候，希望它们能对我们友好些。
巴诺斯博士表示，寻找外星生命时，总是使用地球作为参照物。
Dr Baross said that looking for alien life has always involved using the Earth as a model.
妈妈(拿起一个外星忍者)：“你都好几年不玩它了。”
Mom (picking up an Alien Space Ninja) : "You haven't played with this in years."
他指出，外星人可能会利用目前人类力所不及的技术展现自己。
Aliens could reveal themselves with technologies that are currently far beyond the scope of humans, he pointed out.
外星人和天外来客长期以来一直是好莱坞电影和科幻小说的题材。
Space aliens and extraterrestrials have long been popular subjects of Hollywood movies and science fiction literature.
我们已经可以得到距离地球百万光年之外星系的照片了。
Now we have images of galaxies millions of light years away from Earth.
这类外星智能探索研究的最棒之处在于，可能已经掌握了这些数据。
The best part of this type of search for extraterrestrial intelligence, or SETI, study is that the data may already be in hand.
但无论哪种方式，答案就和寻找外星生命本身一样是具有推测性的。
But either way, the answer is as speculative as the search for extraterrestrial life itself.
Pillinger教授认为火星是最有可能找到外星生命的地方。
Prof Pillinger argues that Mars is the most likely place to find alien life.
上图为鹰状星云若干突出的尘埃柱之一，就像是一个巨大的外星精灵。
Pictured above is one of several striking dust pillars of the Eagle Nebula that might be described as a gigantic alien fairy.
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