前言：
Could a meteorite collision really mean the end of life on Earth? Read this to find out what happens when small meteorites collide with Earth, and just how much damage a big one could do.
隕石碰撞真的意味著地球生命的結束嗎？ 閱讀本文得以了解當小隕石撞擊地球時會發生什麼，以及一顆大隕石會造成多大的破壞。