There is an asteroid on a collision course with the Earth.
有个小行星正处于可能与地球发生碰撞的航向上。
Scientists were debating whether an asteroid was about to hit the Earth.
科学家们在争论一颗小行星是否要撞上地球。
The largest asteroid is Ceres, which is about a quarter the size of the moon.
最大的小行星是谷神星，其体积大约是月球的四分之一。
Will an asteroid hit the Earth?
会不会发生小行星撞击地球的事件呢？
"Asteroid strike?" said Aziraphale.
“小行星撞击？”亚茨拉菲尔说。
我们能不能让小行星停止运行？
Will you check if it is known asteroid ?
你将会检查它是否是一颗已知的小行星吗？
You can find large diamonds in the asteroid belt.
你可以在小行星带找到巨型钻石。
This is the first asteroid sample return mission.
这是首个收集小行星样本的任务。
That means they most likely came from an asteroid.
这意味着它们最有可能来自一颗小行星。
Large meteorites actually come from the asteroid belt.
大型陨星实际上是来自小行星带。
But he wanted to locate the impact site of the asteroid.
但是他想确定小行星的撞击地点。
But…it has entered an asteroid field and we cannot risk…
他们进到小行星群，但…我们不敢冒险前往…
Some of them could even become the first to visit an asteroid.
他们中的一些甚至可能第一个访问小行星。
Alright, next time... we'll come back to the asteroid...
好吧，下次…我们会继续聊小行星。
Sometimes an asteroid will leave that path and hit Earth.
有时某个小行星会脱离这条轨道，并撞向地球。
Asteroid impact can threaten us, or a supernova explosion.
舒尔茨·马库奇说，“小行星冲撞或者超新星爆发都能威胁到我们。
It will probably be easier to do this on the moon than on an asteroid.
显然，在月球上完成这个任务比在小行星上完成要容易。
Astronomers have yet to witness an asteroid impact with another planet.
天文学家还没有目击过小行星撞击其它行星。
Then one day a big, bad asteroid came along and wiped out all the dinosaurs.
突然有一天,一个巨大且极具摧毁性的小行星的降临灭绝了所有的恐龙;
Potential destinations include an asteroid, the moon and eventually Mars.
现在以确定的潜在目的地有小行星，月球，当然最终自然是火星。
An asteroid, the size of nine ocean liners will pass close to earth today.
今天，一颗体积相当于9艘远洋邮轮的小行星将接近地球。
An asteroid, the size of nine ocean liners will pass close to earth today.
今天，一颗体积相当于9艘远洋邮轮的小行星将接近地球。
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