Where does the sun come from and where does the sun come from

When hydrogen atoms in the universe undergo nuclear fusion at ultra-high temperatures or ultra-high pressures, they begin to release a large amount of energy, so stars are produced, and other substances such as helium are produced.

From the beginning of the universe, star formation is doomed to death, and the Sun is the third generation of stars that slowly formed after the second generation of stars** formed supernovae.

The sun is not **, he is the star...

The current age of the Sun in the main sequence zone, confirmed using computer models of stellar evolution and primordial nucleosynthesis, is about 100 million years old. This is very consistent with the radioactive dating of the oldest material of the sun is 100 million years old.

The Sun has reached middle age in the evolutionary phase of its main sequence, in which nuclear fusion is the fusion of hydrogen into helium at the core. More than 4 million tons of matter are converted into energy in the Sun's core every second, producing neutrinos and solar radiation.

At this rate, the Sun has so far converted about 100 Earth-masses of matter into energy, and the total time spent by the Sun in the main sequence is about 10 billion years.

Extension: The sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.

The Sun is an ordinary star in the Milky Way. According to the theory of stellar evolution, the Sun, like most other stars, was born from a cloud of interstellar gas. This gas cloud existed about 4.6 billion years ago in the disk-like structure of the Milky Way, about 2.5 billion kilometers from its center.

It was about 5 million times the size of the current sun, and its main component was hydrogen molecules. This is the "Solar Nebula". After more than 400,000 years of contraction and condensation, a star was born in the center of the nebula, which is the sun.

Shortly after the formation of the Sun, some of the gas and dust that remained around the Sun formed planets orbiting the Sun and many other solar system bodies such as asteroids and comets, including the Earth and the Moon. The Sun is now about five billion years old, in the middle of its life. It can also burn calmly for about five billion years.

The sun comes out of us.

The sun rises in the east.

But in different places on the planet, at different times, the specific situation is different:

At the spring and autumn equinoxes, the sun rises due east in the red acacia road, the southeast rises in the northern hemisphere, and the northeast rises in the southern hemisphere;

During the summer and winter solstices, there will be a polar day and night phenomenon at the South Pole or the North Pole, and no sun will rise, and the area between the Tropic of Cancer will also have a slight deviation from the sun rise.

Summary. Hello, I'm glad to answer for you, dear, the answer to the sun from the first is: the sun is the heat energy emitted by the core of the sun, and the thermal energy of the core of the sun comes from nuclear fusion, which is a spontaneous reaction, formed by the collision of atomic nuclei, releasing a large amount of energy, and these energies are the energy of the sun.

Hello, I'm glad to answer for you, dear, the answer to the sun from the first is: the sun is the heat energy emitted by the core of the sun, and the thermal energy of the core of the sun comes from nuclear fusion, which is a spontaneous reaction, formed by the collision of atomic nuclei, releasing a large amount of energy, and these energies are the energy of the sun.

The surface of the Sun is composed of hydrogen, helium, and other trace elements such as iron, nickel, oxygen, silicon, sulfur, magnesium, carbon, neon, calcium, and chromium, and its surface temperature is up to 5780 K ( The star is located about 10 11 meters from Earth.