Dr. Peter Brown , a researcher with the Meteor Physics Group at the University of Western Ontario, tells us what will happen if a giant asteroid plunges into Earth and pulverizes us.
Peter Brown博士， 西Ontario大学陨石物理学教研组研究员，他的观点是一颗巨大的流星将突然冲入地球将我们磨成粉末。
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This pair of unrelated events ought tofocus minds, and not just among the small group of astronomers who have been worrying about asteroid strikes for many years.