評(píng)論
打印
The astronauts footprints stand preserved to this day.
宇航員的足跡一直保存至今
A testament to the beginning of what I think
初步驗(yàn)證了我所認(rèn)為的
could be the next chapter in the story of the cosmos.
宇宙故事中的下一章:
The spread of life to other part of the universe
生命傳播至宇宙其他地方
As the universe gets older, we will have to get wiser.
隨著宇宙的成長(zhǎng)，我們也要變得更加智慧
I think we will have to go much further than the moon.
我想我們應(yīng)該探索比月球更遠(yuǎn)的地方
At the very least to Mars.
起碼也應(yīng)該探索火星
The red planet is likely
這一紅色星球很可能
to play an important part in our evolution.
在我們的進(jìn)化過(guò)程中扮演著重要角色
and maybe even in the story of the cosmos.
甚至在宇宙發(fā)展歷程中也是
It's the second and possibly the most important steppingstone
它將是人類星際旅行的第二個(gè)
on humanity's journey to the stars.
很可能也是最重要的踏板
Robot missions to Mars have revealed
機(jī)器人的火星探測(cè)任務(wù)展示了
a spectacularly beautiful yet dangerous and desolate place.
一幅美麗而危險(xiǎn)荒涼的壯觀景象
I imagine that being a human pioneer here would be an exciting business.
我想，人類拓荒者抵達(dá)這里一定很令人興奮
For a start, it's cold.
首先，這里很寒冷
It's 50 million miles further from the sun than the Earth
到太陽(yáng)的距離比地球遠(yuǎn)五千萬(wàn)英里
and so it receives half as much warmth
因此只接收到一半的熱量
and the temperatures fluctuate wildly.
而且溫度波動(dòng)很大
From 80 degrees to minus 200 in a matter of minutes.
數(shù)分鐘內(nèi)從80度降到零下200度
If the cold doesn't get you,
如果寒冷的環(huán)境不能征服你
the low gravity will.
那么低重力一定能辦到
Mars is just half the size of the Earth
火星只有地球的一半大小
and has just 38% of its gravity.
而且重力只有地球的38%
Overtime,explorers's bones would weaken
久而久之，探索者的骨頭將變脆
and their muscles would waste away.
肌肉也將變得虛弱
Spent long enough on Mars,
在火星上呆久了
and you could find yourself too weak to safely return to Earth.
你會(huì)發(fā)現(xiàn)自己太過(guò)虛弱而無(wú)法安全回到地球
The low gravity also means Mars struggles to hold on to an atmosphere.
低重力同時(shí)意味著火星很難形成大氣
Here there is nothing more than a thin wisp of carbon dioxide
這里除了稀薄的二氧化碳以外，什么也沒(méi)有
at just one-hundredth the pressure of our air.
氣壓也只有我們氣壓的百分之一
