How was the Earth formed? Briefly, how did the earth come to be?

There is a very authoritative theory that explains the rotation of the earth and the tilt of the earth's axis in this way:

In the early days of the earth, it was just an asteroid, relying on gravity to continuously capture foreign celestial bodies to strengthen itself, and foreign celestial bodies were moving at high speed relative to the earth, so the process of capture was a violent collision. The largest impact occurred 4.5 billion years ago, when a large asteroid hit the Earth from the side, causing the Earth to spin, and the material and asteroids that collided out formed the moon, and the crater left by the impact formed the ocean.

Without the Moon, the Earth would wobbly or even turn upside down. The gravitational pull of the Moon is the best stabilizer of the Earth's axis of rotation, pointing it near the North Star and keeping it at 66 degrees 34 minutes from the plane of rotation. So that the earth has four seasons in the year.

In the beginning, the earth rotated very fast, only 5 hours a day, and the deceleration effect of tidal friction became 24 hours a day. This is the story of the formation of the Earth's moon.

So, it is inertia that keeps it spinning, and tidal friction caused by gravitational force slows it down slowly.

The universe is a hypothesis in itself! The universe is a vast self-circulating system. Galaxies (such as the Milky Way) go from cold to hot and from hot to cold, as is the case with all galaxies in the universe.

The pendulum will swing! The cold pole of the Milky Way erupts and heats up. In the early days, the Sun (which is still rotating at high speed inside) rotates and has a scorching ring (like Saturn's rings).

Due to the differential rotation of the ring, there are 9 large maelstrom (like a tornado) The vortex has a centripetal effect (a bucket of water is put into a handful of sand, the water is stirred, the sand is rotated, and the sand is deposited in the center), and finally solidifies into nine planets, which capture the rest of the material in their orbit and grow, and the Earth is one of them.

Therefore, the planets of the solar system can be cotropic and coplanar.

How was the Earth formed? Brief.

- is the inevitable result of the development of the universe!

The universe has produced all matter, and the earth has also been born.

The formation of the Earth began with the contraction of the solar nebula.

The interstellar dust material (mainly ice and rocky, about millimeter in diameter) that is already present in the nebula gas acts as a condensation nucleus, slowly absorbing the particles scattered around it, gradually increasing in mass over time.

At this time, it is called "star", and then the accretion process is more intense, the stars will collide and fuse, and finally form a protoplanet, and then further evolve into planets, continuous accretion, continuous collision and fusion, and the earth is formed in this way.

Interstellar dust plays two important roles in the formation of the solar system

The first is cooling, when the nebula shrinks, the temperature increases gradually from the outside to the inside, and this dust can help the nebula cool the interior of the nebula, so that the pressure generated by the thermal movement inside the nebula can be reduced, which will play a role in gravitational contraction.

The second is that these interstellar dust can act as condensation nuclei, just like the formation of snowflakes on the earth, three major conditions: water vapor, low temperature, and condensation nuclei, so these interstellar dust will continue to adsorb the scattered particles around them, slowly grow, and finally form larger stars, and then collide and merge with each other to become protoplanets and planets.

You might think that the complex Earth is made up of an infinite number of different substances, but in fact it contains almost only four basic components, ferrosilicon magnesium, these four elements account for 93% of the earth's substance, and the rest is only a trace supplement, including calcium, aluminum, copper, and so on.

The entire solar system is composed of a primordial nebula for a long time, some nebula materials gradually gather together to become the sun, some become the earth, some become Mars and so on.

How do you know that?

What we know now is probably all of them.

Extrapolated by science.

If you really want to know the real one.

Maybe I'm going to ask about aliens.

2. After different centuries, different geological ages have different characteristics.

3. 2.4 billion years ago, the primordial sphere began to appear on the earth, and lower life and living environment began to form.

4. In the era of primitive organisms, marine life began to appear.

5. With the evolution of organisms, more and more animals began to appear on the earth.

6. The development of the natural world eventually led to the emergence of human beings.

7. With the passage of time, there is today's earth.

The Earth is a member of the solar system, and geologists believe that the Earth was formed roughly 4.6 billion years ago. In the beginning, the earth was just a rock, and it continued to attract some dust and debris with a weak gravitational pull, and gradually increased in mass. As the mass of the Earth grows, it becomes a sphere under the gravitational equilibrium of the stars.

In the process of attracting dust and debris, the Earth slowly cleared other celestial bodies in its orbit and experienced fewer and fewer asteroid impacts. So the temperature of the earth began to drop, the rock layers on the surface began to form, the water vapor in the atmosphere began to condense into rain and fall to the ground, the primordial oceans began to form, and our earth was formed with it.

How the earth was formed.

About 4.7 billion years ago, dust gathered in the universe to form the Earth and the other planets of the solar system in which it is located. At that time, the air did not contain oxygen, but contained a lot of carbon dioxide (carbon dioxide gas) and nitrogen.

Originally, the Earth was small, but it continued to increase in size due to the constant impact of small stars in the universe. And when it hits, the energy gathers, the temperature rises, and eventually melts into a liquid.

Soon, the number of star impacts decreased, and the temperature of the Earth's surface decreased, forming the Earth's crust. This is the surface of the earth today. However, magma in the Earth's interior is constantly erupting, forming a large number of volcanoes. The water vapor in the volcanic ash cools and condenses into water, which forms the ocean.