The temperature of the sun is 6,000 degrees, but the core of the earth is as high as 6,800 degrees,

The freshly cooked meal is also very hot, 100 coming, but we don't eat it in our hands. There are 6,000 in the core of the earth, but human beings do not live directly in the core of the earth, separated by dozens of kilometers of crust, and the heat of the earth's core is difficult to scald human beings.

The temperature of the core of the earth is very high, it is no longer a guess, there are more than 200 kilometers underground, the existence and eruption of magma is also side evidence, the more to the core of the earth, the more difficult it is to release the energy released by the fission of radioactive materials inside the earth, all of which are held in the interior of the earth, and separated by dozens of kilometers of thick crust, the crust is composed of rocks and other components, which is not a good conductor for heat, so the interior of the earth is very hot, Part of the heat in the Earth's interior is the heat converted from kinetic energy during the continuous collision of a large number of small celestial bodies during the formation of the Earth. In the process of planet formation, radioactive materials themselves are heavier, and it is easier to form a core of material accumulation, and it is also easy to sink into the core area of the earth.

Although the core of the earth is hot, it is basically two worlds from the surface, and it is difficult to influence each other. However, in recent years, there seems to be some research that there is a certain relationship between global warming and the movement of the earth itself, and it is not completely determined whether the heat leaking out of the earth's interior is caused by other factors. The Earth's core is hot, and the Earth's crust is insulated, and there are tens of kilometers between humans and the hot magma, and life is completely fine.

The environment on the surface of the earth is perfectly suitable for the survival of organisms, the temperature is not high or low, the temperature difference between day and night is not large, the matter can move more freely, collide with each other to produce the basis of life, water can dissolve a large number of substances, become the nourishment of organisms, so perfect for the survival of life on the planet, so far human beings have not found a second.

The heat of the sun is transferred to the earth through light, although light heats up the surface of the earth, but most of the strong rays, such as infrared ultraviolet rays with strong thermogenesis, are blocked by water molecules and gas components in the atmosphere, and will not directly burn living things.

The earth is a very large sphere, the temperature in the crust is high, but there will be layers of protective shells on the outside of the earth's core, and the protective heat will be lost in the process of transfer, so the temperature of the earth's crust is as high as 6800 degrees Celsius, but it will not scorch humans.

Because there are deep rocks and soil above the earth's core, these rocks are insulated from the soil from heat, so humans will not be scorched.

Because the Sun is very far from the Earth, and the Earth's core is separated from the surface by a mixture of rock and mud 3,500 kilometers, it does not scorch humans.

The sun is the absolute ruler of the solar system. Without the sun, the solar system would not have formed, and life would not have been possible on Earth. Every planet and every moon of the planet in the solar system will be touched by the Sun, especially the Earth, because it is not far from the Sun, from which the Earth receives enough light and heat.

If you get too close to the Sun like Venus, Mars, you will be burned by the sun's rays. <>

The surface temperature of the sun can reach more than 5,000 degrees Celsius. The Sun, in particular, is still a star that has been doing nuclear fusion. When the sun's life comes to an end, the sun's heat will only increase, and the temperature of the sun's core can reach a maximum of more than 15 million degrees Celsius.

It is precisely because the energy of the sun does not change that there is never a shortage of sunlight for a quarter of an hour on earth. However, the sun can warm the distant Earth. The mass of the sun can occupy more than 99% of the solar system, but it does not warm the space of the solar system.

You know why? <>

The temperature in space is close to absolute zero. It can be seen that the space is cold. Astronauts wear spacesuits not only to protect against radiation, but also to prevent low temperatures in space.

So why doesn't the sun shine warmly into space? In fact, it has to be said that the form of temperature embodiment is different. As I said, the sun's light and heat are actually a physical reaction.

Unlike many combustibles on Earth, solar particles are constantly moving closer to Earth. The Earth is protected by an atmosphere more than 1,000 meters deep, which has a good function of storing temperature, making the Earth a habitable planet, while Venus and Mars do not have a thick atmosphere. <>

Similarly, there is no excess matter in space to store the temperature of the sun. This allows many particles to gradually evaporate heat as they are released in the universe. And, although the mass and volume of the Sun are enormous, the number of stars like the Sun is still relatively small compared to the planets in space.

It is almost impossible for these stars to illuminate the entire space. So we can see how lucky and special the Earth should be. It is also a wonderful thing that human beings can come to earth and be born.

Human beings must know how to protect and cherish all these hard-won things.

Because space is really boundless, the vast universe is too vast, and the temperature of the sun alone is not enough, and it cannot warm the entire space at all, so space is so cold.

Because space is too big and expands faster than the speed of light, light cannot fill the entire universe, so it is still cold in space.

There is an atmosphere, and the distance also has an effect.