How does the Martian atmosphere's density change at different elevations?

的大气密度如高度变化？

The Martian arctic could freeze the robot.

北极可能会冻住机器。

Do we do some form of Martian orbit rendezvous?

我们是否进行某种形式的轨道交会？

That's a 1,700-square-foot Martian habitat inside a building in Houston.

这是一个位于休斯顿的一栋建筑内的占地1700平方英尺的栖息地。

In 1999, a 125 million dollar satellite sent to Mars, disappeared in the Martian atmosphere.

在 1999 年，一枚发射到、价值 1.25 亿美金的造卫，在大气层失了。

But that things like tomatoes carrots and other crops could grow in simulated Martian soil.

像是番茄、胡萝卜等等可以生长在模拟的土壤。

We're going to need the ability to convert the martian atmosphere into breathable oxygen.

我们需要能将大气转化为可供呼吸的氧气的能力。

Danger awaits you on this the desolate beauty, and perhaps Martians too.

危险在这种美丽荒凉中等待你, 也许还有。

He doesn't know how to talk to the Martians.

他不知道怎么跟对话。

Come on, Ali. There're no Martians. Mars is lifeless.

得了吧，阿里，根本没有，上没有生命。

Along the way it found ample evidence for the presence of water during Martian history.

在此过程中，它发现了曾存在水的大量证据。

The passenger...a robot geologist headed for the Martian arctic.

乘客是——一位前往北极的地质勘探机器。

We're cells of life and that actually grew here. Maybe we could all be Martians.

我们生命的细胞如今在这里繁衍。或许我们都曾经是。

Martian air and even occasional cloud formations are made up almost entirely of carbon dioxide.

的空气和偶尔的云层几乎完全由二氧化碳组成。

The advice you find there might help you set up your own little Martian colony.

也许会有能帮你建立自己的小殖民地的建议。

But when it was, it could have shot lava beyond the Martian atmosphere.

但当这座山活跃的时候，它可以将岩浆射出的大气层。

No Martian colonies yet, but we do have humans living long term around our planet.

还没有殖民地，但我们有类长期生活在我们的球上。

The 2.4-billion-dollar mission is the U.S. space agency's ninth trek to the Martian surface.

这项耗资24亿美元的任务是美国航天局第九次登上表面。

The flight took about seven months before a dramatic landing on the Martian surface.

这次飞行花了大约七个月的时间才戏剧性地降落在表面。

Deeper in space the ESA has plans to retrieve Martian samples in 2022.

在更深的太空中，欧空局计划在2022年取回样本。