Research discovered that the Moon was born in violent collisions of the Earth "Pro" | | Moon _ the Earth News
Original title: the Moon was born in violent clashes, Earth's "sister"
This precious piece of Lunar meteorite samples provided by NASA of Purple Mountain Observatory imagesAs Earth's closest celestial bodies, the Moon's life has always been a man wants to solve the mystery. It and the Earth has "blood" relationship? Scientists study and exploration of the Moon for a long time. Recently, the Purple Mountain Observatory, Chinese Academy of Sciences Chemistry and planetary science laboratory of good news: Purple Mountain Observatory, scientists and United States California Institute of technology researchers to cooperate, after 5 years of research, found new clues in the meteorite from the Moon, proof that the Moon is the Earth and the other planets "violent collision", she is the Earth's "sister".
/ZAKER Nanjing modern Express Reporter An Ying
Moon, from 4.5 billion years ago, a collision
What is the origin of the Moon? Scientists gave many of the brain's hole was wide open conjecture. Purple Mountain Observatory, Chinese Academy of Sciences Labs Chief Scientist Xu Weibiao of Cosmochemistry and Planetary Sciences are introduced, the most popular is the "collision". According to "impact", the solar system when it was formed, the world, conflict-ridden bodies big and small. Just over 4.5 billion years ago, Earth was a "little embryo" when all of a sudden one day, a body the size of Mars crashed into Earth. This hit, the Earth's "little bodies" simply cannot afford, knocked out a lot of material, that is, countless rock was hurtled into space, rotate around the Earth. Later, the rock debris attract each other and condensed to form the Moon "raw materials".
Xu Weibiao introduction, impact theories of evidence comes from studies for the Apollo Moon rocks. Scientists have found rocks in the oxygen isotope composition of Earth materials are exactly the same. In other words, the Earth and the Moon "DNA" are exactly the same. Chemical constituents of "medical" found that volatile elements in the Lunar rocks (such as carbon and hydrogen) was much lower than the Earth. In consequence, produced during the impact process extreme fever, have evaporated these volatile elements.
The Moon, was born in the "fire" test
Scientists are not satisfied with the above two pieces of evidence to support the "impact", they tried to find out more about the hidden secrets of the moon. Xu Weibiao of the team and collaborators found in meteorites from the Moon the Moon originated from the latest evidence of the collision. "This is a story about a moon Phoenix Nirvana. "Xu Weibiao said.
Lunar meteorites, Xu Weibiao team discovered the chlorine isotope fractionation of 35 and 37, the lighter isotope chlorine 35 high evaporation many, while the heavier isotope of chlorine 37 more. This strange "fractionation" expert sensitive enough to capture the Moon crashed that "ashes" moments, a series of analysis and then leaving no stone unturned.
Xu Weibiao goes on to explain, chlorine isotope fractionation of Lunar meteorites, suggesting that they may experience high temperature and evaporation of volatile elements. "How do you make an object on the chemical elements disappear? "Xu Weibiao answered only one large-scale high temperature melting process could provide enough calories for evaporation of chlorine, which would prove disastrous collision that really happened. Moon in "fire" test was born.
This study further unravel the mystery of life on the Moon, the Moon is the Earth and the other planets "violent collision", she is the Earth's "sister".
The next year, or will reveal the first handful of Chinese Lunar soil
"Lunar mystery than we had expected, the Moon rocks look dull, found in a slice of each mineral, chemical composition of each new moon are hidden life password. If you can read it, you will find that the moon has experienced dramatic story. "Xu Weibiao said. Modern Express Reporter, this precious piece of Lunar meteorite samples by NASA (United States National Aeronautics and space agency). United States Apollo and Soviet Moon exploration plans from more than more than 380 kg of rock samples collected on the moon. In 2017, the Chinese goddess of the Moon, 5th China brought back from the Moon the first handful of Lunar soil, Purple Mountain Observatory is currently preparing, introducing a set of advanced instruments studied Moon rocks. Scientists expect more samples to study, to answer the mystery of the origin and evolution of the moon to provide more useful information.
Responsible editor: Wei chun
Article keywords:Moon Earth
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研究发现月球诞生于暴力冲撞 系地球“亲妹”|月球|地球_新闻资讯
原标题：月球诞生于暴力大冲撞，是地球“亲妹”
这块珍贵的月球陨石样品由NASA提供 紫金山天文台供图 作为距离地球最近的天体，月球的身世一直都是人类想解开的谜团。它和地球有“血缘”关系吗？科学家对月球进行了长期的研究与探索。近日，中科院紫金山天文台天体化学和行星科学实验室传来好消息：紫金山天文台科学家与美国加州理工学院的科研人员合作，经过5年研究，从月球陨石中发现了新线索，有力证明了月球是地球和其他星体“暴力相撞”的产物，她是地球的“亲姐妹”。
现代快报/ZAKER南京记者 安莹
月球，源于45亿年前的一次碰撞
月球是怎么起源的？科学家给出了许多脑洞大开的猜想。中科院紫金山天文台天体化学和行星科学实验室首席科学家徐伟彪介绍，最流行的是“碰撞说”。依据“碰撞说”，太阳系刚刚形成时，天下大乱，天体之间大大小小的冲突频发。就在45亿年前，地球还是个“小胚胎”时，突然有一天，一颗火星大小的天体撞击到了地球。这一撞，地球的“小身体”根本无法承受，被撞出了一大堆物质，也就是无数的岩石被抛入太空，围绕着地球旋转。后来，这些岩石碎片互相吸引和凝聚形成月球的“原料”。
徐伟彪介绍，撞击理论的证据来自对阿波罗月球岩石的研究。科学家发现月岩中所含的氧同位素组成比例与地球的物质完全一样。也就是说，地球和月球的“DNA”完全一样。而化学成分“体检”发现，月球岩石中挥发性元素（比如碳和氢元素）的含量要比地球低很多。由此推断，在撞击的过程中产生了极端高热，这些挥发性元素被蒸发掉了。
月球，诞生于“烈火”考验
科学家们并不满足于上述两个证据来支撑“碰撞说”，他们试图找出更多的月球隐藏的秘密。徐伟彪的团队和合作者就从月球陨石中找到了月球起源于大碰撞的最新证据。“这也是一个关于月球凤凰涅磐的故事。”徐伟彪说。
在月球陨石中，徐伟彪团队发现了氯同位素35和37的分馏现象，较轻的氯同位素35被高温蒸发了不少，而较重的氯同位素37则保留较多。这一奇怪的“分馏现象”让专家敏感地捕捉到了月球被碰撞时那“浴火重生”的瞬间，继而抽丝剥茧进行了一系列分析。
徐伟彪接着解释，月球陨石的氯同位素分馏的现象，说明这些挥发性元素可能经历了高温蒸发过程。“如何才能让一个物体上的化学元素消失呢？”徐伟彪回答，只有一个大规模高温融化过程才能为氯的挥发提供足够热量，这也就证明那场灾难性的大碰撞真的发生过。月亮就在“烈火”考验中诞生了。
这一研究成果进一步揭开了月球身世之谜，月球是地球和其他星体“暴力相撞”的产物，她是地球的“亲姐妹”。
明年，或将揭秘第一抔中国月壤
“月球比我们想象的要神秘，这块月球陨石看上去平淡无奇，切片中发现的每种矿物，每一个新的化学组成都隐藏着月亮的身世密码。如果你能读懂它，就会发现月球曾经经历过许多惊心动魄的故事。”徐伟彪说。现代快报记者了解到，这块珍贵的月球陨石样品由NASA（美国国家航空航天局）提供。美国阿波罗登月计划和苏联探月计划从月球上采集了380多公斤的岩石样品。2017年，中国的嫦娥5号将从月球上带回第一抔中国月壤，目前紫金山天文台正在积极准备，引进了一整套研究月岩的先进仪器。科学家期待通过更多的月球样品研究，给解答月球起源和演化之谜提供更多的有用信息。
责任编辑：隗俊
文章关键词： 月球 地球
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