How far away the sunlight is from Earth is not affected by the Earth s autobiography

Break away from the inertia of the Earth's rotation and not follow the Earth, so that there can be no day and night, and this has nothing to do with altitude. It has something to do with the gravitational influence of the Earth.

And the main problem is that your knowledge of astrophysics is too weak, and you don't understand some conceptual things at all, so the questions you ask are also wrong, and others can't.

It's better to figure out how day and night come about before you ask questions.

That doesn't happen. What we call "polar day" and "polar night" can only be replaced alternately in a six-month cycle, because the earth's axis of rotation has a deviation of 23°, and the earth's rotation is autonomous, so that kind of place will not exist. Unless, as the Earth is towards Uranus, the axis of rotation is at an angle of 90 degrees to the orbit of the revolution.

Yes, as long as the light travels in a straight line, it will be infinitely far away, but this light will be infinitely weak. However, we should note that our human eye is a 100-million-pixel camera, so we can only recognize xx faint light and not infinitely weak light changes.

Can you be specific? I don't understand the meaning of the question.

The sun's influence on the earth is noted below

1. Solar activity: sunspots, flares, solar rays, solar winds.

2. The structure of the outer atmosphere of the Sun and the corresponding types of activities.

The outer atmosphere of the Sun from the inside to the outside is:

Photosphere (sunspots), chromosphere (flare, heliosphere), and corona (solar wind).

The number and size of sunspots can be used as indicators of the strength of solar activity.

Flare eruptions are the most intense indication of solar activity.

The sunspot cycle is 11 years, which is usually the place and time with the highest number of sunspots, and it is also the place and period where other forms of solar activity, such as flares, are frequent.

3. The impact of solar activity on the Earth.

1. Affect the climate, especially the impact on precipitation;

2. Disrupt the earth's ionosphere and interfere with radio short-wave communications;

3. Disturb the earth's magnetic field and produce the phenomenon of "magnetic storm".

It can follow about 100 million kilometers, and it takes about 8 minutes for sunlight to reach the earth.

Sunlight can follow 100,000 kilometers. This one is quite far away.

The sunlight will always follow you, this is Ye Yuanqin, because you are an entity, so when the sunlight hits you, it will be reflected, and you will be able to see the sunlight.

1. Celestial bodies: the forms of existence of matter in the universe, collectively referred to as celestial bodies. According to its material composition, mass, and motion law, it can be divided into main types such as stars, nebulae, planets, moons, comets, and meteoroids.

The most basic types of celestial bodies are stars and nebulae, and their differences are as follows:

2. Celestial sphere: an imaginary sphere with an infinite radius with the observer as the center of the sphere. When explaining the position and motion of celestial bodies, people think of the projection of celestial bodies on the celestial sphere as themselves.

3. Constellation; In order to make it easier to recognize the stars, the celestial sphere is divided into several regions, called constellations, and the whole day is divided into a total of 88 constellations. There are three constellations around the North Celestial Pole, namely the Great Bear, the Little Bear and the Cassio, which can be seen all year round in the middle and high latitudes of the Northern Hemisphere. At around 21 o'clock in the middle latitudes of the northern hemisphere in the early latitudes of September, constellations such as Lyra, swans, and Aquila can be seen near the zenith.

4. Celestial system: The celestial bodies in the universe are all in motion, and the celestial bodies in motion are attracted to each other and orbit each other, forming systems of different levels.

5. Overview of the sun (compared with the earth).

6. The external material structure of the sun: The outer part of the sun is the atmosphere, which is divided into three layers: the photosphere, the chromosphere and the corona. All the activities of the solar atmosphere are collectively called solar activities. Sunspots and flares are the main markers of solar activity, both with a cycle of 11 years.

7. Solar energy: Under high temperature and high pressure, the center of the sun undergoes a nuclear fusion reaction, that is, the fusion of four hydrogen nuclei into one helium nucleus. In the process of nuclear fusion, the sun loses some mass and emits a large amount of energy.

8. Solar system: a celestial system composed of the sun, planets and their moons, asteroids, comets, meteoroids and interplanetary matter. The Sun is the central body of the solar system; In the solar system, all other celestial bodies revolve around the sun under the sun's gravitational pull.

9. The motion of the nine planets has three characteristics: coplanarity, isotropy and near-circularity.

10. According to their structural characteristics, the nine planets can be divided into three categories: terrestrial planets, giant planets, and far-sun planets.

11. Conditions for life on Earth:

1) The appropriate distance between the sun and the earth and the appropriate rotation period of the length make the earth have the appropriate temperature and liquid water, which is conducive to the existence of living matter;

2) The earth has the appropriate volume and mass, and its gravitational pull can absorb all kinds of gases in the Daxun gas layer, and in the long process of evolution, it has formed an atmosphere suitable for biological respiration.