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Making an impact

机译:产生影响

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Late in 2004 astronomers made an alarming discovery. Initial estimates of the orbit of an asteroid, discovered a few months earlier, suggested that there was a 1% chance of it colliding with Earth in 2029. With further measurements this probability increased to nearly 3%. The asteroid was dubbed Apophis, the Greek name for an Egyptian god of destruction. This seemed fitting, since the asteroid is about 250 metres across, some five times larger than the objects that produced Meteor Crater in Arizona, roughly 50,000 years ago, and the Tunguska event in 1908, which flattened 2,000 square kilometres of Siberian forest. If Apophis did hit Earth, someone would get an extremely nasty headache indeed.
机译:2004年底,天文学家做出了惊人的发现。几个月前发现的小行星轨道初步估计表明,到2029年,小行星与地球碰撞的可能性为1%。进一步测量后,这一可能性增加到近3%。这颗小行星被称为Apophis,希腊语是埃及破坏神的名字。这似乎很合适,因为小行星的宽度约为250米,比大约50,000年前在亚利桑那州产生流星陨石坑的物体和1908年的通古斯(Tunguska)事件大五倍,后者使2000平方公里的西伯利亚森林夷为平地。如果Apophis确实击中了地球,那么确实有人会感到非常讨厌。

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