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太阳系 经典句子 用英语写十句关于太阳系的句子

Our solar system is made up of the sun and everything that travels around it. This includes eight planets and their natural satellites such as Earth"s moon. Our solar system formed about 4.6 billion years ago.Our solar system is part of a galaxy known as the Milky Way. Everything in the Solar System revolves around the Sun. The Sun contains around 98% of all the material in the Solar System. Because the Sun is so large, its powerful gravity attracts all the other objects in the Solar System towards it. At the same time, these objects, which are moving very rapidly, try to fly away from the Sun, outward into the emptiness of outer space. The result of the planets trying to fly away, at the same time that the Sun is trying to pull them inward is that they become trapped half-way in between. Balanced between flying towards the Sun, and escaping into space, they spend eternity orbiting around their parent star.

太阳系 经典句子 用英语写十句关于太阳系的句子

太阳系代表的爱情句子,不要太明显

你是我的太阳,我是你的地球。(自己编的,不好见谅)意思是你对我很重要,没你我无法生存,而我每天都在为你旋转。
答题不易,满意求采,不满见谅。

用太阳系造8个句子(英语的)

Around the sun moving objects obey Kepler "s law of planetary motion, the track using the sun as one focus of the ellipse, and closer to the sun faster. The orbits of the planets close to circular, but many comets, asteroids and Ke Yibo Kuiper Belt objects orbit is highly elliptical.

In this vast space, there are many ways to express the solar system in each track distance. In fact, the distance to the sun more distant planets or belt, and a distance is farther, and only a handful of exceptions. For example, in addition to Venus and mercury approximately 0.33 astronomical unit distance, while Saturn and Jupiter is a distance of 4.3 astronomical units, Neptune and Uranus at 10.5 astronomical unit. There have been attempts to explain these relation interaction between track distance variation.

[editor this paragraph] 2 formation and evolution

The artist "s protoplanetary disk and the formation of the solar system is believed to have been based on the nebular hypothesis, the earliest in by Kant and by Laplasse independently proposed. The theory is that the solar system is 00 years ago in a giant molecular cloud collapse in the formation of the. This nebula was the size of several years, and at the same time the birth of several stars. To study the ancient meteorite traced elements showed only a supernova explosion, a portion of the heart in order to proce these elements, therefore consists of a sun cluster inevitable in a supernova remnant in the vicinity of. May be derived from a supernova explosion shock wave of the adjacent solar near the nebula density increased, the gravity to overcome internal gas expansion pressure caused by collapse, which trigger the birth of the sun.

Was identified as the solar nebula region is in the future will be the formation of the solar system area, diameter is estimated at to 0 astronomical units, but only a little more than the sun ( 0.1 to 0.001 solar mass ). When Nebula began to collapsed, the law of conservation of angular momentum so that its speed is accelerated, the internal atomic collision frequency increase. The central region has focused most of quality, temperature than the surrounding disk more heat. When gravity, gas pressure, magnetic and rotation effects on the contraction of nebulae, it becomes flat as rotating protoplanetary disks, and a diameter of about 200 astronomical units, and in the center there is a hot and dense star.

The young star of the Taurus T, believe that the quality and the fusion stage in the development of the sun is very similar, showing in the forming stage often have the original planetary material disc with. These disks can be extended to hundreds of astronomical unit, and the hot part can reach thousands of K at high temperature.

One hundred million years later, in the collapse of the nebula"s center, the pressure and density will be large enough to make the original solar hydrogen began heat fusion, this will increase until the hydrostatic equilibrium, so that the heat energy to withstand gravitational contraction can. Then the sun to become a true star.

Believe that through the accretion effect, various planets from the clouds ( solar nebula ) remaining in the gas and st in the birth of:

1 when the st particles are still around the central protostar, the planet is already beginning to grow;

2 then by direct contact, gathered into 1 to 10 kilometers in diameter;

3 then passes through the collision to form larger ones, a diameter of about 5 kilometers into stars;

4 in the future for millions of years, through further collision with annual the speed of 15 cm to continue to grow.

In the inner solar system, because of excessive warmth make water and methane in the volatile molecules can condense, thus forming stars to relatively small ( only occupied disk quality 0.6% ), and the main component is a high melting of silicate and metal compounds. These rocky bodies finally became the terrestrial planets. A little further stars, by Jupiter "s gravitational influence, cannot be together become the original planet, and now see the asteroid belt.

In the far distance, in the freezing line, volatile substance can also be frozen solid, on the formation of Jupiter and Saturn these massive gas giant. Uranus and Neptune have fewer materials, and because the core is considered mainly ice (Hg ), and is therefore called the ice giant.

Once the young sun began to proce energy, solar wind will be a protoplanetary disk of material into interplanetary space, thus ending the planet "s growth. Young T Tauri stars and stellar wind than in stable phase of the older stars much stronger.

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