U.S. government officials are set to approve a mission by privately-held space company Moon Express to travel outside of Earth's orbit in late 2017.

美国政府官员在2017年底批准了一项私营航天公司Moon Express将在地球轨道外遨游的任务。

Extra-terrestrial means from outside, Earth, and is another word often used to describe aliens.

“地球外的”是指来自地球之外，是另一个经常用来描述外星人的词。

And what could they tell us about the universe and life beyond our planet?

这些图像又能告诉人类宇宙和地球外生命的什么信息？

In fact, it was the first ocean ever discovered on another celestial body.

事实上，这是在除地球外的天体上发现的第一个海洋。

I'm acting as link between Earth and those on an extra-terrestrial planet.

我是地球和外星球之间的联系人。

It's also why off-planet volcanoes tend to look more like pancakes than Mt. Fuji.

这也是为什么地球外的火山比富士山看起来更像煎饼的原因。

All my life, I've wondered about life beyond the Earth.

一生中，我都在好奇地球外的生命。

Dating back to May 15, 2021, a lander, carrying the Zhurong rover, touched down in the southern part of Utopia Planitia, a vast plain in the northern hemisphere of Mars, imprinting the country's first landing on an extraterrestrial planet.

可以追溯到 2021 年 5 月 15 日，一个载有祝融号巡视器的着器在乌托邦平原的南部着（乌托邦平原是火星北半球的一个广阔平原），标志着我国首地球外的行星。

They were on this planet for more than 100 million years, and these guys were very successful and they only went out because of extraterrestrial causes.

它们在这个星球生存了一亿多年，它们是非常成功的，它们的灭绝也只是由于地球外的因素。

Titan is the only planet in our solar system besides Earth to have known bodies of liquid on its surface.

土卫六是太阳系中除地球外唯一已知的表面有液体的星球。

The reservations " weight lesseted" , and the view of the best " off earth" .

“重量减少”的预定，和“地球外”最好的风景。

And what the NASA scientist showed was that with a simple analysis you can show that that was moving at 40 miles an hour, so certainly nothing very extra-terrestrial about that.

NASA的科学家所展示的是，通过一个简单的析，你可以证明那个东西是以每小时40英里的速度移动。因此，它肯定不是地球外的事物。

It was the first ocean discovered on another planet.

这是在除地球外的天体上发现的第一个海洋。

The passengers also will have to deal with the physical demands of traveling outside Earth's orbit.

乘客们还必须应对在地球轨道外旅行的身体需求。

And finally, extra-terrestrial means from outside Earth, and is another word often used to describe aliens.

最后，“地球外的”是指来自地球以外，是另一个经常用来描述外星人的词。

Now, while astronomers are scientists who study questions concerning things outside of Earth, they often avoid investigating supposed aliens.

现在，虽然天文学家是研究与地球外事物有关的问题的科学家，但他们经常避免调查所谓的外星人。

Now, if you remember, space is the area that is outside the Earth.

现在，如果你还记得，太空是地球外的区域。

Because of this, when NASA is looking for evidence of life outside our planet, we first start by looking for evidence of water.

因此， 当美国宇航局寻找地球外生命存在的证据时，我们首先从寻找水的迹象开始。

Meanwhile, the world's population is now growing to a stage where there are too many people for the planet to support, highlighting the need to seek land suitable for people's resettlement off the planet.

同时，世界人口现已增长到一个阶段，地球已无法支持如此多的人口，这凸显了需要寻找适合人类移居的地球外土地的必要性。

They've let us gather more knowledge of what goes on outside our planet than ever before.

他们让我们收集到比以往任何时候都更多的关于地球外发生的事情的知识。