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信不信由你,地球上到处都有陨石坑,尽管许多都被构造活动磨损了,但有些仍然存在,比如亚利桑那陨石坑,它的直径接近3/4英里,还有奇克苏鲁布陨石坑,它来自于杀死恐龙的彗星,尽管有些被认为幸存下来并进化成鸟类现在的爬行动物,还有2013年在那里爆炸的流星形成的车里雅宾斯克陨石坑,最近,2018年在格陵兰岛发现了一个新的陨石坑,科学家认为这是造成上一个冰河时代的原因。但是,陨石坑又偏离了球形,使地球失去了圆的资格。—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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