地球的力量 第5集稀有行星(5):納米比亞
這是個(gè)巨大的隕石坑
It was blasted out of the Earth's crust 50,000 yearsago.
五萬年前與地球地殼相撞形成的
Well, there it is, Meteor Crater.
就是它了，隕石坑
This place really gives you a sense of the destructive power of incoming meteorites.
這個(gè)地方讓你明白 小行星的破壞力
The blast here would have vaporised a city larger than London.
這里的爆炸可以毀滅一個(gè)比倫敦還大的城市
But the lump of rock that did it measured almost 80 feet across.
但是造成這個(gè)破壞的巖石直徑還不到30米
The impact exploded with a force 70 times greater than the atom bomb.
這次沖擊爆炸力要比原子彈強(qiáng)70倍
But what makes this massive crater so significant
但是這個(gè)巨大的坑之所以意義深刻
isn't how big it is, but how rare it is.
并不是因?yàn)樗啻蠖且驗(yàn)樗嗝瓷僖?/p>
Because although it might not look like it, space is a hazardous place.
也許看起來不像但是太空是個(gè)很危險(xiǎn)的地方
There are millions of objects that cross Earth's path at thousands of miles per hour.
幾百萬的物體都朝地球來 每小時(shí)幾千公里的速度呼嘯飛來
With so much debris up in space, Earth should be hit much more often.
在太空有這么多的碎片地球應(yīng)該經(jīng)常被擊中才對(duì)
Other craters do exist but they're few and far between.
雖然有其他的隕石坑但它們卻寥寥可數(shù)
This one is in Namibia.
這個(gè)就是在納米比亞
