The earth used to be the sun, and was the sun always as close to the earth?

The sun's luminescence and heat are nuclear fusion, which is a physical reaction, while the combustion phenomenon is a chemical reaction, which is fundamentally different. If the Earth used to be a star, there would be no life now, and to be a star you need to have a large enough mass, which is far from enough for the mass of the Earth. There are generally several outcomes after a star completes the process of the main sequence star, small and medium-mass stars will become black dwarfs or white dwarfs, those with a large mass but not enough to become black holes will become neutron stars, and massive stars that can become black holes will collapse into black holes.

Water is the product of hydrogen combustion, but this is not how water comes from the earth, and it is now generally believed that the water on the earth was in the early days of the formation of the earth, when there were many comets in the inner orbits of the planets of the solar system, and the comets contained a lot of water, and these comets were crashing into the earth, so the water was brought to the earth. It has also been found that comets contain the basic elements and even amino acids needed to give birth to life, so it is not certain that life on Earth came from comets.

1. The sun is a fireball, but instead of hydrogen and oxygen reacting to produce water, it is a nuclear fusion reaction.

2. The main component of petroleum is C, H, and the reaction between hydrogen and oxygen is without element C, so the petroleum industry is not a product of incomplete combustion.

3. Your imagination is good, keep it up, and don't be a nerd for exams.

Landlord, you really laughed at this statement, the earth turned out to be a supernova, through the core gravity of the earth to regather the debris, and then the gravity of our earth also made the moon next to the earth, the original earth was volcanoes, volcanic eruptions of magma sandwiched with carbon monoxide, hydrogen sulfide, hydrogen toxic gas, at that time the earth was not suitable for the life of living beings, but at that time there was a stone made of a lot of bacteria that can produce oxygen (I forgot the name of this stone), Then the earth began to be filled with oxygen, and then the ozone layer was formed, you should have learned in chemistry, water is H2O is composed of oxygen and hydrogen, then the earth has water, but the high temperature of the earth makes this water evaporate, and then it forms rainfall and so on and on, and then after a long time all the volcanoes stop erupting, and the earth forms a water ball, water is the birthplace of life, and at this time there is single-celled life. Then the earth suddenly cooled down and all the water froze (scientists don't have an exact answer to why the earth cooled down), then it became the ice age, and after a while, the heat of the sun melted the glaciers, and this was the age of life, and the evolution of life formed the current world.

The Earth was formed by most of the rocks in the early days of the solar system.

Is it true that the oxygen is extinguished when the sun is gone, and the oil left in the water and the earth is the product of incomplete combustion?

Neither, the sun is a star, the earth is a planet, not a level!

The sun is not a nuclear reaction.

So how do you explain the trajectory of the earth, is our earth a curvilinear trajectory? Let's create an illusion of light illuminated by visual effects.

Approximately 8 minutes and 13 seconds.

It takes more than 8 minutes for sunlight to travel from the sun to the earth, and the distance from the moon to the earth is more than 380,000 kilometers, and it only takes more than a second for light to reach the earth, so the sun we see is the sun 8 minutes ago, and the moon we see is the moon more than a second ago.

Question 1: What star is the sun, what star is the earth, what star is the moon, what star is the earth The sun is a star, and the celestial body that can rely on thermonuclear fusion to shine and heat itself is called a star.

The Earth is defined as a planet of the sun, and a planet is a near-spherical object that orbits a star and is relatively massive enough to clear small bodies near its orbit.

The Moon is defined as a satellite of the Earth, and a satellite is a natural celestial body that orbits a planet and orbits periodically in a closed orbit.

Definition Question 2: What is the Earth and what is the Moon The Earth is the planet of the Sun, and the Moon is the satellite of the Earth.

Question 3: What is the relationship between the sun, the earth, and the moon The sun is the center of the solar system, the earth is a planet in the solar system, and the moon is a natural satellite of the earth.

In the Earth-Moon planetary system, the Moon revolves around the Earth, and the Earth rotates constantly, creating a difference between day and night.

A solar or lunar eclipse occurs when the three line up in a straight line:

A solar eclipse occurs when the moon blocks sunlight from reaching the Earth in the middle;

A lunar eclipse occurs when the Earth blocks the sunlight from shining towards the moon in the middle.

Question 4: Which came first, the sun or the earth, the earth and the sun were formed first, it is obvious that there was the sun first, and the remnants of the primordial sun** formed the other planets in the solar system. The actual observed age of the Sun is about 5 billion years, and the Earth is about 4.6 billion years.

With the sun, there will be vibrant plants and animals on the earth, and human beings will be able to survive. With the sun, plants can produce nutrients and oxygen, and oxygen can be constantly circulated, and plants can survive well. With plants, herbivores can survive, carnivores can survive, the food chain will not be destroyed, and everything will survive.

Sunlight irradiates the earth with energy is the most important element of surface energy, and it is an important factor in the formation of the earth's environment. Environmental factors include sunlight, air, and water, which allow human beings to survive, and in fact, almost all of them are inseparable from the sun's radiation. Sunlight is radiated by the sun, and the most direct effect on human beings is the appropriate temperature, and photosynthesis provides essential food for human beings, and if there is no photosynthesis of plants, there is no lowest level of the food chain.

Now the composition of the atmosphere and solar radiation are inextricably linked, in the billions of years of changes on the earth, the sun has given the earth a suitable temperature, but also given the earth's atmosphere the conditions for the formation of various chemical reactions. Liquid water will only exist at 0-100 degrees Celsius, and will not appear at high or low temperatures. Sunlight also provides temperature for the formation of liquid water.

The mass of the sun accounts for more than ninety-nine percent of the solar system, and if there is no gravitational pull of the sun, other planets are very formed, and if the planets cannot be formed, the earth will not exist, and humans will not appear on the earth.