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信不信由你,地球上到處都有隕石坑,盡管許多都被構造活動磨損了,但有些仍然存在,比如亞利桑那隕石坑,它的直徑接近3/4英里,還有奇克蘇魯布隕石坑,它來自于殺死恐龍的彗星,盡管有些被認為幸存下來并進化成鳥類現在的爬行動物,還有2013年在那里爆炸的流星形成的車里雅賓斯克隕石坑,最近,2018年在格陵蘭島發現了一個新的隕石坑,科學家認為這是造成上一個冰河時代的原因。但是,隕石坑又偏離了球形,使地球失去了圓的資格。—格雷戈里
Believe it or not, there are craters all over Earth, though many are worn away by tectonic activity, but some still do remain present, such as the Arizona crater, which is nearly 3/4 of a mile in diameter, along with the Chixulub crater that was from the comet that killed dinosaurs (though some were believed to have survived and evolved into birds and present day reptiles), yet there's the Chelyabinsk crater from the meteor that exploded there in 2013, and recently, a new crater was discovered in Greenland in 2018 from an impact that scientists believe was responsible for the last ice age.But again, craters are deviations from sphericity, disqualifying Earth from being round. - Gregory
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