METEOR DETECTIVES

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METEOR DETECTIVES

机译：流星侦探

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On September 2,2015, a three-foot meteor broke into pieces that rained down near a Turkish village. After examining 343 of those fragments and other evidence, an international team of 79 researchers announced they were able to determine the meteor's return address: the Antonia impact crater on the asteroid Vesta, which is 156 million miles from Earth. The detectives relied on a variety of clues to pinpoint the origin site. For instance, the fragments turned out to be "howardites." Scientists know howardites formed on Vesta, since the samples they've studied on Earth reflect light in the same manner as the surface of the distant asteroid. Taken together, the clues pointed to the Antonia impact crater, which was among the many surface features on Vesta photographed by the NASA Dawn spacecraft earlier in the decade. The meteorites were created by a collision that occurred 22 million years ago.

机译：2015年9月2日，三英尺的流星闯入土耳其村附近下雨的碎片。在审查这些碎片和其他证据的343之后，79名研究人员的国际团队宣布他们能够确定流星的返回地址：距离地球15600万英里的火星冲击火山口。侦探依赖于各种线索来查明原点站点。例如，碎片原来是“多伦多。”科学家们知道在Vesta上形成的豪华，因为他们在地球上研究的样品以与远距离小行星的表面相同的方式反射光。总之，线索指出的是安东尼亚州影响火山口，这是美国宇航局黎明航天器早些时候拍摄的Vesta的许多表面特征之一。陨石是由2200万年前发生的碰撞而产生的。

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《Air and Space》 |2019年第2期|16-16|共1页
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