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The earth is a fragment of the universe after the universe is large, and the universe is constantly expanding, and one day the universe will shrink to form a coincidence point, density, temperature, mass, infinity, and then large**, and so on.
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To put it simply, in the universe, the sun is the existence of a star. The relationship between the sun and our earth is that our earth depends on the sun, otherwise there would be no life.
Sunlight is still the same light emitted by the sun, but it changes when it is closed in the earth's environment, it is a very simple change, that is, it is partially absorbed by the atmosphere, dust, objects, etc., emitted, and finally emitted into our eyes to form the so-called sense of seeing. So it's not that there's no sunlight in space, it's that the sunlight there is purer, and maybe there's nothing reflected to your eyes in the vertical width, and you can't see it, and of course looking directly at the sun is another matter.
The energy released by the sun is eventually converted into radiant light and propagated, and as for who can receive it, it depends on the ability of each planet itself
It is not clear what the structure of the atmosphere of other planets is, anyway, the earth's atmosphere is fully functional, not only can absorb the sun's radiated light, but also convert the light into heat energy for the use of all things on the earth and human beings, the earth's atmosphere.
How many functions there are, that's what scientists are studying, but that's not the case anyway.
Solar systemThe range is 2 light-years large, and there are eight planets and many moons orbiting the sun, and the heat emitted by the sun, whether it is radiating light, is all in the service of the system.
As for the remaining space that cannot receive light and heat, it is because it is a vacuum zone, and the vacuum space does not absorb any light and heat, mainly because there is no excessive material absorption, so it seems cold, and it is with their coldness that there will be the warmth of the planets and moons.
Why, if the vacuum also absorbs light and heat, or absorbs all the energy released by the sun and the afterglow of radiant light
So what about the planets, it's not about drinking the northwest wind, isn't this the reason, let's talk about the universe and the galaxies.
All have their own certain laws, which cannot be changed, otherwise how will the universe survive and expand, and how will galaxies develop.
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The Sun is a large burning canopy fireball made up of hydrogen and helium, about 149.6 million kilometers away from us, and the Sun is the star, and the Earth revolves around the Sun along with eight other planets.
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The first point is that the sun is so exciting and real, it has a lot to do with the earth, because we are all part of the solar system, so there is a sun to have our hungry life, the second point is that the sun and the earth are related to each other, so no one can be separated from the bad luck.
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The Sun is a star and is the center of the entire solar system, and the Earth is the third planet of the Sun, revolving around the Sun for one revolution.
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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.
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First of all, there are streams of photons and neutrinos between the sun and the Earth, mainly nuclear fusion radiation and blackbody radiation emitted by the sun.
Secondly, gravitons directly exist in the sun and the earth, and gravitons transmit gravitational force, but the existence of gravitons is only predicted in theory, and there is no way to observe it through practice.
Then there are gases and dust directly on the Sun and Earth, and this is mainly ejected from the solar corona or other lead activity, as well as interstellar material drifting from the universe.
Again, dark matter exists directly on the Sun and Earth, and dark matter is widely present in the Milky Way, but its density is also very low, and it cannot be directly observed, and can only be observed indirectly through stellar orbits and gravitational lensing.
Finally, the vacuum is not empty, there are quantum fluctuations in the vacuum, and virtual particle pairs will be randomly generated in the void and annihilation will occur immediately. The Large Hadron Collider can use this property to discover new particles. Thus the vacuum contains all the elementary particles.
The formation of the primitive earth.
Before the formation of the earth, there were many asteroids in the universe revolving around the sun, and these planets collided with each other to form the primitive earth, when the earth was still a hot fireball, and as the collision gradually decreased, the earth began to cool slowly from the outside to the inside, producing a thin layer of hard shell - the earth's crust, at this time the earth was still in a hot state. A large amount of gas is ejected from the inside of the earth, which carries a large amount of water vapor, which forms a circle of atmosphere surrounded by the periphery of the earth, the position of the earth from the sun is not too close to the water vapor is evaporated by the sun, and the size of the earth itself has enough gravity to pull the atmosphere, so the earth will have a unique atmospheric environment, and the atmosphere begins to rain after the formation, and the original ocean is formed. >>>More
The other two said it well! Thermal support!
The Sun was originally a planet, and after hundreds of millions of years of changes like Jupiter, it became a star, but Jupiter will shine in a few hundred million years.
When a volcano erupts magma, it spreads to various places and gradually cools to form rocks, and sand, soil, and dust appear from continuous weathering. >>>More
At present, the Nebula theory is the dominant view. For more information, please refer to the encyclopedia.