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...
THE aspect of the heavens, the appearance of the planets, do not give us the least idea of the solar system. In order to understand it well, we must in imagination quit our world altogether, and remove ourselves to a distance, so as to embrace in one glance the little system of which...
【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。
While we do not yet have a wholly complete answer, a consensus has arisen about the most likely series of events that led to the present-day system of the Sun and planets. A key piece of evidence about the origin of the solar system is that all the planets orbit the Sun in the same...
Formation of the Solar System Where did the solar system come from? This question has tantalized astronomers for centuries. While we do not yet have a wholly complete answer, a consensus has arisen about the most likely series of events that led to the present-day system of the Sun...
The solar system started to form about 4.56 Gyr ago and despite the long intervening time span, there still exist several clues about its formation. The three major sources for this information are meteorites, the present solar system structure and the p
Naturally, there were no humans to observe these processes taking place during the formation of our solar system. But astronomers have seen disks of material surrounding other stars that formed only recently.These are called protoplanetary disks,or proplyds, because it is thought that planets can ev...
TF050-Formation of the Solar System 412023-03 3 TF049-The Angiosperm Revolution 342023-03 4 TF048-The Commercialization of Agriculture in the United States 662023-03 5 TF047-The Cooling of Early Earth 412023-03 6 TF046-The Decline of the Arctic Fox in Scandinavia 322023-03 7 TF045-The ...
Which of the following can be inferred from paragraph 6 about the formation of the solar system? A The Sun was already billions of years old when the planets were formed. B The planets closest to the Sun formed first. C Meteorites entered the solar system sometime after the planets we...
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