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,...
高频单词:orbit ▶orbit:英 ['ɔːbɪt] 美 ['ɔːrbɪt] n. 轨道;眼眶;势力范围;生活常规; vi. 盘旋;绕轨道运行 vt. 绕…轨道而行双语例句: The earth orbits the sun. 地 - 单词大爆炸于20240728发布在抖音,已经收获了4.7万个喜欢,来抖音,记
1.A key piece of evidence about the origin of the solar system is that all the planets orbit the Sun in the same direction and in nearly the same plane.As long ago as the eighteenth century, German philosopher Immanuel Kant and French scientist Pierre-Simon deLaplace independently suggested t...
1. The planets orbit about the Sun in elliptical orbits with the sun centered at one of the ellipse's two foci (Figure 1). 2. An imaginary line connecting the sun and a planet sweeps out equal areas in equal times as the planet moves through its orbit. A consequence of this is tha...
In the solar system, there are eight planets that orbit the sun. Earth is the third planet from the sun. It is 150 million kilometres away from the sun. Earth is between Venus and Mars. The first four planets are small and rocky. The next four are big and mainly made of gas.When ...
The planets travel around the Sun in approximately elliptical orbits with the Sun at one focus, as shown below. (1)Show that the polar equation of the planets orbit can be written as r=(a(1-^2))((1-θ )). (2)Prove that the perihelion distance of any planet is a(1-), and the...
There are eightbig planets and five small dwarf planets in the solarsystem.Each planet orbits the sun. The strong pull of the sun'sgravity holds the planets orbit, which keeps them fromfloating away. Gravity is the same force that makes abaseball fall to the ground when you drop it.词汇...
根据第一段“The distances from the Sun to Mars is more than 141 million miles”可知从太阳到火星的距离超过1.41亿英里,题干中“少于1.41亿英里”表述有误。故填F。【小题2】细节理解题。根据第二段“and one of the planets that can be seen from the Earth without a telescope(望远镜) ”可知,火星...
And of course, the planets move in the sky as well.当然，天空之中的的行星也会运动。Mercury, Venus, Mars. . . they orbit the Sun, too, and they do so in approximately the same plane the Earth does.水星、金星、火星……它们也绕太阳公转，它们的公转轨道与地球的公转轨道大致相同。If you ...
No, the mass of a planet does not affect the shape of its orbit. According to Kepler's first law, all planets, regardless of their mass, follow elliptical orbits with the Sun at one of the foci. The shape of the orbit is determined by the planet's velocity and ...