请帮我翻译这段文字,英文的,非常感谢

一、分裂说。这是最早解释月球起源的一种假设。早在1898年,著名生物学家达尔文的儿子乔治•达尔文就在《太阳系中的潮汐和类似效应》一文中指出,月球本来是地球的一... 一、分裂说。这是最早解释月球起源的一种假设。早在1898年,著名生物学家达尔文的儿子乔治•达尔文就在《太阳系中的潮汐和类似效应》一文中指出,月球本来是地球的一部分,后来由于地球转速太快,把地球上一部分物质抛了出去,这些物质脱离地球后形成了月球,而遗留在地球上的大坑,就是现在的太平洋。这一观点很快就收到了一些人的反对。他们认为,以地球的自转速度是无法将那样大的一块东西抛出去的。再说,如果月球是地球抛出去的,那么二者的物质成分就应该是一致的。可是通过对“阿波罗12号”飞船从月球上带回来的岩石样本进行化验分析,发现二者相差非常远。
二、俘获说。这种假设认为,月球本来只是太阳系中的一颗小行星,有一次,因为运行到地球附近,被地球的引力所俘获,从此再也没有离开过地球。还有一种接近俘获说的观点认为,地球不断把进入自己轨道的物质吸积到一起,久而久之,吸积的东西越来越多,最终形成了月球。但也有人指出,像月球这样大的星球,地球恐怕没有那么大的力量能将它俘获。
三、同源说。这一假设认为,地球和月球都是太阳系中浮动的星云,经过旋转和吸积,同时形成星体。在吸积过程中,地球比月球相应要快一点,成为“哥哥”。这一假设也受到了客观存在的挑战。通过对“阿波罗12号”飞船从月球上带回来的岩石样本进行化验分析,人们发现月球要比地球古老得多。有人认为,月球年龄至少应在70亿年左右。
四、大碰撞说。这一假设认为,太阳系演化早期,在星际空间曾形成大量的“星子”,星子通过互相碰撞、吸积而长大。星子合并形成一个原始地球,同时也形成了一个相当于地球质量0.14倍的天体。这两个天体在各自演化过程中,分别形成了以铁为主的金属核和由硅酸盐构成的幔和壳。由于这两个天体相距不远,因此相遇的机会就很大。一次偶然的机会,那个小的天体以每秒5千米左右的速度撞向地球。剧烈的碰撞不仅改变了地球的运动状态,使地轴倾斜,而且还使那个小的天体被撞击破裂,硅酸盐壳和幔受热蒸发,膨胀的气体以及大的速度携带大量粉碎了的尘埃飞离地球。这些飞离地球的物质,主要有碰撞体的幔组成,也有少部分地球上的物质,比例大致为0.85:0.15。在撞击体破裂时与幔分离的金属核,因受膨胀飞离的气体所阻而减速,大约在4小时内被吸积到地球上。飞离地球的气体和尘埃,并没有完全脱离地球的引力控制,通过相互吸积而结合起来,形成全部熔融的月球,或者是先形成几个分离的小月球,在逐渐吸积形成一个部分熔融的大月球。
展开
 我来答
方雅寒E0
2008-09-29 · TA获得超过778个赞
知道小有建树答主
回答量:676
采纳率:100%
帮助的人:408万
展开全部
ONE, split up to say.This is a kind of assumption of hermeneutic moon origins at the earliest stage.As early as 1898, Zhao son George with Darwinian biologist?Reach an Er text at 《the tide in the solar system and similar effect 》one text middle finger, the moon's originally ising a permafrost is one part, afterwards because the Earth turns soon and too and quickly, threw to go out on the earth a part of materials, these materials became the moon after escape from the Earth, but leave behind at on the earth the big pit be the Pacific Ocean in nowadays.This standpoint is very quick and then received some people's objection.They think that rotating speed with the permafrost can't throw so big piece of thing to go out.Say again, if the moon is what the Earth throws to go out and so the material composition of twos should be consistent.But Be through the rock sample that the rightness"Apollo the 12th" airship brought back from the moon carry on analyze analysis, discover that twos differ very far.
Two, capture to say.This kind of assumption thinks that the moon is original a minor planet in the solar system just, once, nearby because of circulating the Earth, is capture by the permafrost gravitation, from now on have never left the Earth any further.Still have a kind of close the standpoint captured to say think, the Earth continuously get into the material of own orbit to absorb to accumulate to arrive together, as time passes, absorb to accumulate of thing more and more, end became the moon.But also someone point out, be like the moon thus big star, the Earth perhaps has no so big strength ability to capture it.
Three, say with source.This assumption think that all of the Earth and the moons are the nebulas which floats in the solar systems through revolving and absorbing to accumulate and become a star body in the meantime.In the process of absorbing to accumulate in, the Earth corresponds and hurries up than the moon and become "elder brother".This assumption also was subjected to an objective and existent challenge.The rock sample which passes the rightness"Apollo the 12th" airship to bring back from the moon carries on analyze analytical, people discover that the moon want compare the Earth thou old have to be many.Someone think that the moon age should at least in around 7,000,000,000 yearses.
Four, the big collision say.This assumption thinks that the solar system evolves earlier period, once became a great deal of"star son" in the interstellar space, the star son pass mutual collision, absorbed to accumulate but grow up.The star sub- merger becomes an original Earth, also in the meantime became an equal to Earth quality is 0.14 times heavenly bodies.These two heavenly bodies are in the process of respectively evolving in, the metals which became to regard iron as principle respectively checks and constitutes to°from the Huo sour salt of drapery and hull.Because of these two heavenly body not far from one anothers, so the opportunity for meet very big.An accidental opportunity, that small heavenly body is bump with each one 5,000 meters or so speed toward the Earth.Violent collision not only changed permafrost sport appearance, make the axis of earth's rotation tilt to one side, and still make that small heavenly body bumped shot broken, the Huo sour salt hull and drapery are evaporate by heat, inflate of air and big of the speed took to in great quantities smash of the dust fly off the Earth.These draperies which fly off permafrost material, mainly have a collision body constitute, also is little parts of on the earth of material, comparison to the order of 0.85:0.15.The metals pit separated with drapery while bumping a shot body blowout, because of be subjected to the air that the inflation fly off the Zu but deceleration, about is absorb to accumulate on the earth within 4 hours.Flying off permafrost air and dust, having no to completely escape from a permafrost gravitation control, passing to absorb to accumulate but knot to put together mutually, becoming all moons of meltdowns, perhaps becoming several small moon for separates first is completelyabsorbing to accumulate to become an odd month ball of parts of meltdowns gradually.
wujiayue54321
2008-10-11
知道答主
回答量:34
采纳率:0%
帮助的人:0
展开全部
lj
已赞过 已踩过<
你对这个回答的评价是?
评论 收起
收起 1条折叠回答
推荐律师服务: 若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询

为你推荐:

下载百度知道APP,抢鲜体验
使用百度知道APP,立即抢鲜体验。你的手机镜头里或许有别人想知道的答案。
扫描二维码下载
×

类别

我们会通过消息、邮箱等方式尽快将举报结果通知您。

说明

0/200

提交
取消

辅 助

模 式