Sun is the nearest star from Earth is the center of the solar system objects. Quality 99.87% solar system are concentrated in the sun. The solar system’s eight planets, asteroids, meteors, comets and objects outside Neptune, as well as interstellar dust and so on, have revolved around the sun (revolution).

Scientists believe that our sun and nine planets, almost in the same period from the birth of interstellar clouds. Interstellar clouds floating in the Milky Way by the gas and dust composition, there is 92% gas is hydrogen, 7.8 percent are helium and dust was the major components of silicate. The density of interstellar cloud density and not uniform, has the distortion to exist.

The entire universe, according to the newest Harvard outer space stereoscopic vision estimate’s result which is composed of many illuminations’ some nebulas and dark materials, in the universe probably some 500 billion nebulas, where the so-called “light-emitting nebula in” is commonly known as the Milky Way . In this solar system, the Milky Way was as know as Galaxy. Between Milky Way and universe, majority Milky Ways are the same, is like a plate shape swirl nebula. The whirlpool arm was one kind of density wave or said strictly was one kind of shock wave (Note: The concept of such a density wave by the Swedish scientists first proposed by Bertil Lindblad, and later by Dr. Lin JiaQiao such person be further proof of the quantitative estimates.)

The gas of Galaxy will be compressed when pass after the whirlpool arm will cause the density increase, like a dark zone (covering the background stars). This is part of the density wave upstream. However, when density enlargement also among increased the gas to collide the opportunity, therefore has caused the star formation, this so called the downstream part of the density wave. (This had also demonstrated entire response is irreversible reaction, therefore whirlpool arm may say that is one kind of shock wave.) According to the astronomy inspection, resulted the bigger star’s demonstration quality, the lifespan is shorter. Majority planets in the whirlpool are a contour brightness and great quality OB planets. (Note: the ongoing nuclear fusion reaction of the planet, draws on according to its quality and brightness distribution a main foreword star row chart, may be divided into O B A F G K M according to its quality and other. The Sun is belonging to G star.)

Stars dies will produce one kind of shock wave, is one kind of compression wave when the supernova detonation happened. These supernova explosions of the wreckage and the surrounded compressed gases will combine to form a smaller planet. The solar system is one of the outer spiral arms at the Galaxy.