Osmond had noticed that some spaces, like 正在翻译,请等待... [translate] agetup getup [translate] a The solar system formed from a piece of a nebula of gas, ice, and dust. 太阳系从气体、冰和尘土星云的片断形成了。 [translate] ...
1. According to paragraph 1, which of the following best describes the “nebular hypothesis”? O Our solar system formed from a large cloud consisting mostly of hydrogen and helium and of small amounts of other elements. O Our solar system formed from gases and heavier elements thrown off by...
Around the protostar, a large flat discof dust, rock, and ice, which would become the planets, moons, and asteroids in the solar system, collected.This initial stage in the formation of the solar system lasted approximately 100,000 years. Next,the planets formed through the process known as...
Any model of the origin of the solar system must explain why all the planets orbit the Sun in the same direction and in nearly the same plane. One model that wasdevisedexplicitly to address this issue was the tidal hypothesis, proposed in the early 1900s.Two nearby planets, stars,...
O Our solar system formed from a large cloud consisting mostly of hydrogen and helium and of small amounts of other elements. O Our solar system formed from gases and heavier elements thrown off by the Sun as it rotated in the center of the nebular cloud. ...
(original) material as the Sun. This material formed a vast cloud of dust and gases called a nebula. The nebular hypothesis suggests that all bodies of the solar system formed from an enormous nebular cloud consisting mostly of hydrogen and helium as well as a small percent of all the ...
【解析】题干问的是：根据第 2 段，下列关于十八世纪太阳系起源理论的说法，哪一个是正确的？根据题干the origin of the solar system定位到段首句：关于太阳系起源的一个关键证据是，所有的行星都在同一个方向和几乎同一个平面上绕太阳公转，对应A选项。
The dominant accretion process leading to the formation of the terrestrial planets of the Solar System is a subject of intense scientific debate. Two radically different scenarios have been proposed. The classic scenario starts from a disk of planetesimals which, by mutual collisions, produce a set...
托福阅读真题第216篇OriginoftheSolarSystem(答案文章最后) Origin of the Solar System Paragraph 1:The orderly nature of our solar system leads most astronomers to conclude that the planets formed at essentially the same time and from the same primordial (original) material as the Sun. This material...
Comets(彗星) are made from debris left over when our Solar System was formed.The solid part of a comet,the nucleus,is a chunk of ice typically measuring a few kilometres across.The ice in a comet is mainly made up of frozen ammonia,methane and water.Harvard University astronomer Fred L....