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  • The earth is constantly being hit by particles of dust, tiny rocks, and other space debris.


  • These small objects usually burn up high in the atmosphere, producing the shooting stars you may have seen while looking up at the night sky.


  • But astronomers are always on the lookout for bigger asteroids, especially the ones that may be on course to strike our planet.


  • While rare, these collisions with rocks from deep space do happen and the results can be downright terrifying.


  • An asteroid just seven meters in diameter will explode with the power roughly equal to the atomic bomb that was used on Hiroshima, leveling buildings up to a mile away.

    一顆直徑 7 公尺的小行星爆炸的威力大約與使用在廣島的原子彈一樣,能把建築物升起至一英里高。

  • A larger one hundred meter diameter asteroid has more power than the largest nuclear weapon ever tested and could level an entire city!

    一個更巨大,直徑 100 公尺的小行星具有比有史以來測試過的最大核武更強的破壞力,可以將一座城市夷為平地!

  • But there are even bigger asteroids out in space.


  • And a run in with one of these would have a truly global impact.


  • An insanely giant asteroid, one around ten kilometers in diameter, would create an impact crater one hundred and eighty kilometers wide and twenty kilometers deep.

    一顆直徑大約 10 公里的超大型小行星碰撞會造成 180 公里廣、20 公里深的撞擊坑。

  • Beyond just the impact it would cause worldwide earthquakes and mega tsunamis over one hundred meters high.

    除了這個影響外,也會造成全球地震和超過 100 公尺高的巨型海嘯。

  • Dust and ash thrown up into the atmosphere would cover the surface of the earth for years.


  • A massive die off of plants and animals would follow.


  • Basically the end-of-life as we know it.


  • And this has happened before.


  • An asteroid of roughly that size is what we think killed the dinosaurs.


  • And if an enormous asteroid the size of the earth were to hit, the planet would be completely obliterated, leaving nothing but the earth's core and creating a new asteroid belt between Venus and Mars.


  • But don't worry too much.


  • Giant asteroids the size of the one that wiped out the dinosaurs only hit the earth about every fifty to one hundred million years.

    將恐龍滅絕的那種巨型小行星每 5000 萬到 1 億年才會撞擊地球一次。

  • Of course, the last one was sixty-six million years ago so I guess you could say we are due.

    想當然耳,距離上一次是 6600 萬年前,所以我猜你可以說我們是安全的。

The earth is constantly being hit by particles of dust, tiny rocks, and other space debris.


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B2 中高級 中文 美國腔 小行星 地球 撞擊 直徑 恐龍 大氣層

一揭行星撞地球的後果! (What If Earth Was Hit By A MASSIVE Asteroid?)

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    doris.lai 發佈於 2020 年 09 月 18 日