Some people say that a long time ago, the whole universe was like an egg, dark, chaotic and closed. There is a man named Pangu sleeping in this egg. He slept for eighteen thousand years. Suddenly, one day he woke up and found nothing around him. He felt bored. So he picked up a sharp axe and slashed at the chaos and darkness in front of him. "Bang-"a loud noise, the big egg burst open, and the light and transparent things inside slowly rose and spread, turning into a blue sky; Heavy and chaotic things, settled down, accumulated together and became the earth. Pangu stood between heaven and earth with his head in the sky and his feet on the ground, so that heaven and earth would not be closed again. His body grows by 65,438+0 feet every day, and the distance between heaven and earth increases by 65,438+0 feet every day. In this way, after 18 thousand years, the sky rose extremely high and the earth became extremely thick, and the sky and the earth became like this. Pangu died of overwork. After Pangu's death, everything on him became everything, his breath became clouds, his voice became thunder, his left eye became the sun, his right eye became the moon, and the blood flowing all over his body became the rushing rivers and seas ... Everything thrived in the embrace of heaven and earth.

Pangu's creation is an ancient myth and legend deeply loved by our people, which reflects the ancients' views on the formation of the earth.

Some people say that before the formation of the earth, the world was an empty space. Later, God came to this world, divided the world into heaven and earth, and ordered, "Light! Come out! " So there was light in the darkness, and there was day and night on the earth. The next day, God created the air. On the third day, God collected the water on the ground and ordered, "Come, land!" " "So the land was born and the ocean was formed. On the fourth day, God created the sun, the moon and many stars to accompany them. On the fifth day, God created birds flying in the sky and fish living in the water. On the sixth day, God created all kinds of insects, wild animals and livestock. Finally, he created man to manage everything in the world. On the seventh day, God was very satisfied with everything he created. He made the seventh day holy, which is what people call Sunday, and God rested.

This is an absurd legend, which is recorded in the Christian Bible.

Someone answered that the earth is a member of the solar system. The solar system family consists of the sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, Pluto and 500,000 asteroids, satellites and comets. The sun is the mother of the solar system. Before the formation of the solar system, it was a nebula composed of hot gas. When the gas cools and contracts, it makes the nebula rotate. Due to the action of gravity, the gas and wind grass contract, the rotation speed is accelerated, and the nebula becomes a flat disk. As we know, the washing machines used to wash clothes in modern families all have dehydrators. When wet clothes are put in, the dehydrator rotates quickly, and the water in the clothes will be "thrown out", and the wet clothes will become dry clothes. The force that throws water out is the force that leaves the center when the water drops move in a circular motion, which is called centrifugal force. Similarly, when the rotating nebula rotates while contracting, the centrifugal force of the surrounding matter exceeds the gravity of the center, and a ring is separated. In this way, one ring after another came into being. Finally, the central part becomes the sun, and the surrounding rings become planets, one of which is the earth, which was produced four or five billion years ago.

This is a scientific hypothesis, which was put forward by the German philosopher Kant and the French mathematician Laplace in the18th century. People call it Kant-Laplace nebula theory. 1944, the German physicist Weizak developed this theory.

The research on the origin of the solar system and the formation of the earth continues and is constantly improving. However, the earth is our mother, nurturing our growth. We humans should know it and understand it. Even if one day, humans move to other planets, we will always miss it.