论文部分内容阅读
地球之水从何处来?这是多少年来争论不休的话题。最近,有的科学家提出了新的论点——地球之水天外来。美国衣阿华州大学的路易斯·弗兰克提出新理论:地球上的云彩、河流、湖泊、海洋、冰帽,都是来自彗星。这些彗星是由大量冰块和少量岩石混合而成的,当它向地球坠落途中表面的冰逐渐融化显露出岩石继续落入大气层。这些岩石像流星一样运行极快,到不了地面就化为粉尘。他认为每天都有几百万吨水从彗星降入地球。据此他预言:不管你在哪里,总有一天你将站在海滨。美国航空航天局的科学家克莱恩·耶茨通过拍照和用先进光学放大镜观测,证明这一理论是有根据的。另一位物理学家格雷克教授估计,每年约有1000万个雪球进入大气层,每个雪球的直径至少有12米,重约
Where does the water of the earth come from? This is the subject of controversy over the years. Recently, some scientists put forward a new argument - the Earth’s water and sky. Lewis Frank of the University of Iowa in the United States put forward a new theory: clouds, rivers, lakes, seas and ice caps on the earth come from comets. These comets are made up of a mixture of large quantities of ice and a small amount of rock, and the gradual melting of the ice on the surface as it crashes reveals that the rock continues to fall into the atmosphere. These rocks run very fast like meteors and can not be turned into dust by the ground. He thinks millions of tons of water drop into the earth from comets every day. According to which he predicted: no matter where you are, one day you will be standing on the waterfront. NASA scientist Klein Yates shows that this theory is validated by taking photographs and observing with advanced optical loupes. Another physicist, Professor Graco, estimates that about 10 million snowballs enter the atmosphere each year, each of which has a diameter of at least 12 meters and weighs about