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Lesson 71. Earth in Danger
第71課 地球危機
Seeing is believing.
眼見為實，
But seeing a huge rock half the size of Earth smash into Jupiter in July 1996 was incredible.
但目睹一顆有地球一半大的巨大石塊在公元一九九六年七月撞向木星卻令人無法置信。
Can you imagine what would happen if Earth collided with a huge space rock?
你能夠想像地球如果撞上太空中的一顆巨大石塊會怎么樣嗎？
It would be disastrous.
那后果將不堪設想。
In fact, it is thought that a meteor killed the dinosaurs millions of years ago.
事實上，有人認為在數百萬年前就是一塊隕石造成所有的恐龍滅絕。
A rock like the one that hit Jupiter could split Earth in two.
一顆像撞到木星那樣的巖石便可把地球撞成兩半。
Doing nothing about it is like waiting for the end of the world.
如果不提出對策就無異于等待地球末日的來臨。
So scientists plan to start project to identify all space rocks that could hit Earth.
因此科學家打算展開一項計劃來辨識所有可能擊中地球的隕石。
