Birth of the Sun

[Kozima]

The solar system was born 4.6 billion years ago. At that time, not only the solar system but also the galaxy may have been born. At that time, other galaxies probably collided with the Milky Way Galaxy, which was still in the process of formation, and because it was just after its birth, there was an abundance of gas and dust, so a starburst may have produced a large number of massive stars. This may have produced large amounts of carbon and iron, which are necessary for life. Therefore, it is possible that the galaxy was supplied with heavy elements in a short period of time because massive stars have a short lifespan. It is now supplying life forms. The main issue is the birth of the solar system. Around this time, a supernova explosion of a massive star created a nebula. It is also possible that the original first core of the solar system was born in the nebula after this supernova explosion. However, it is also possible that the original first core of the solar system was created by a starburst shortly before this. It is difficult to say which is which. At any rate, it is almost certain that the solar system was born around this time. The first core was formed by a supernova explosion in the vicinity of the nebula after the birth of the nebula, and filaments were formed in the nebula. Filaments are self-shrinking due to their high density. This causes the filaments to "muss and fissure" and tear off. The torn filaments shrink further due to gravity. The first core is formed at the center of the filament. This first core becomes smaller due to self-gravity, but due to the increase in angular momentum, it becomes like a thick disk, but as the rotation speed increases, hydrogen is no longer supplied to the inner side. To solve this problem, a dipole flow was considered. This has been proven by observation and also by simulation. This will carry away the angular momentum and supply hydrogen to the inner side. This allows the primordial sun to grow. And at the center, a second core is formed. Also at the center is the protostar. The protostar shines due to thermal energy. But also, the protostar is no longer supplied with hydrogen due to the increase in angular momentum. This is solved by the jet. Thanks to the jet, the angular momentum is carried away and the rotation is calmed. When the center of the protostar reaches 15 million degrees, a nuclear fusion reaction occurs. The Sun is born. Gas {volatile elements of hydrogen and helium} dust remains around the sun, which is the material for planets.