How thick is it? How high and thick the sky is

The sky is more than 10,000 kilometers high, and the thickest part of the earth has kilometers. Sky height refers to the height of the atmosphere above the ground, according to scientists through the investigation of satellite spacecraft, gas molecules were found at an altitude of 2000 3000 kilometers, and at an altitude of 16000 kilometers, there are still traces of gas, so that scientists believe that the sky height should be above 10000 kilometers. Ground thickness refers to the thickness from the ground to the center of the earth.

Interestingly, the earth inhabited by humans is neither round nor oval, but a "pear-shaped" with a large south road and a small north road, with a slightly convex middle. Scientists have measured satellites that the thickness varies throughout the planet, with the area around the equator being thicker than the rest of the world. Therefore, although Mount Everest is the highest peak in the world, with a straight-line distance of kilometers from its summit to the center of the earth, Mount Chimborazo in central Ecuador in South America has a straight-line distance of kilometers from the summit to the center of the earth, making it the thickest place on earth.

Extended informationIn ancient times, it is said that before the opening of heaven and earth, the universe was a chaotic mass of gas, like an egg, Pangu split this mass of qi, the light and clear qi rose into the sky, and the heavy turbid qi sank into the earth, gradually forming mountains and rivers. After 18,000 years, the heavens and the earth are still getting taller and thicker, but no one can say how high the sky is and how thick the earth is. Nowadays, people mostly use "not knowing the height of the sky" as a metaphor for not knowing the arduousness and seriousness of things, and satirizing those who do not measure themselves.

According to the law of temperature change, our atmosphere is divided into five layers, including troposphere, stratosphere, mesosphere, thermosphere, and fugitive layer. Let's start by talking about how the atmosphere is measured at different altitudes. Because the measurement of the atmosphere at different altitudes requires humans or aircraft to reach the corresponding altitude, the measurement of the atmosphere at different altitudes and the development of human aerospace vehicles are closely linked.

There is no clear boundary outside our Earth's atmosphere, we don't suddenly go into space after reaching a certain altitude, the density of the atmosphere decreases with altitude, and finally becomes very low, but it will not be zero. For example, at an altitude of 100 km, the density of the atmosphere is about 1 millionth of the ground, and at an altitude of 200 km, the density of the atmosphere is only 10 billionth of the ground, and after 300 kilometers, the density of the atmosphere will be less than 100 billionth of the density of the ground. Of course, the atmosphere can be detected at an altitude of more than 300 kilometers, but the density is very low, and even at an altitude of 10,000 kilometers, atmospheric molecules can be detected, but at that altitude the atmospheric molecules and the particles blown by the solar wind have been fused and it is difficult to distinguish them.

Because the density of the atmosphere decreases with altitude, the mass of our atmosphere is not evenly distributed, and most of its mass is located at very low altitudes. According to the National Center for Atmospheric Research, the total mass of our atmosphere is about kg. About 50% of the atmosphere is below the altitude, about 90% is at an altitude of less than 16 km, and about 100 km is at an altitude of less than 100 km.

Therefore, after being above 100 km in the atmosphere, the density of the atmosphere is greatly reduced, and it is almost no different from space. In fact, the altitude of space and the inner atmosphere given by the International Aeronautical Federation is about 100 km, which is also known as the Kármán line. Any vehicle that crosses the Kármán line can be considered to have entered space and can be called a spacecraft.

Aircraft that perform activities at altitudes below the Kármán line are called aircraft.

In conclusion, we can see that the determination of the thickness of the atmosphere is not achieved overnight, but is a gradual process. This is actually the same as most scientific research, if you want to achieve great research results, you must continue to learn the knowledge and experience accumulated by your predecessors, and then it is possible to finally build on the foundation of your predecessors.

The heavens are infinitely thick. I don't know which part of the sky you're referring to. If only the atmosphere is concerned, it is based on scientific calculations. It should have a thickness of about 30 km.

How thick is the sky, you ask? I will answer that the sky is a thickness that can never be measured, or a height!

It's a difficult question, and how thick you want it to be.

It depends on how thick the atmosphere is.

Usually what we call heaven refers to the entire space beyond the earth, while earth refers to the surface of the earth. How high is the sky? How thick is the earth?

At present, human beings have observed more than 30 galaxies, identified more than 3,000 star clusters, and can see 10 trillion stars that are similar to the sun, and the farthest distance from the earth is about 20 billion light years, which is equivalent to 10 18 circles along the earth's equator, which is the maximum height of the "sky" currently known.

How thick is the earth? According to the accurate calculations of scientists, the "ground" where people stand on the earth has different thicknesses. The thickness of the poles is 12,714 km, and the equator is 12,757 km, a difference of 43 km.

If you count the atmosphere as days, it was 1,000 kilometers high on that day; Endless drilling into the ground, drilled through, there are 12,756 kilometers, so there are 12,756 kilometers deep.

How high is the sky: If the category is on the earth, the blue sky is shown by the atmosphere refracting sunlight, so I understand the sky here as the earth's atmosphere. The thickness of the atmosphere is about 1,000 kilometers or more, which is 1,000 kilometers.

Beyond the atmosphere, it is the scope of cosmic space, and the Milky Way, where the Earth is located, is about 100,000 light-years in diameter and about 6,000 light-years thick in its center. In the outer universe, even scientists can't be counted as scientists so far.

How thick is the earth: Here it is understood that the earth is the lithosphere of the earth. The lithosphere consists of the entire crust and the upper part of the upper mantle, with the thinnest being 60 km and the thickest being 120 km. Further down is the mantle and core.

If we understand the earth above the center of the earth, including the core, mantle, and crust, then we use the radius of the earth to calculate. The radius of the Earth is more than 6,370 kilometers.

The heavens can be divided into five layers: the first, from the ground to a height of about 12 kilometers, is called the troposphere; The second layer, 12-50 km, is called the stratosphere; the third layer, 50-85 kilometers, is called the middle layer; The fourth layer, 85-500 km, is called thermostratization; The fifth layer, the atmosphere above 500 kilometers, is called the outer layer. The sky is 1200 kilometers high.

The earth has three layers (three concentric spherical layers): the core, the mantle, and the crust. The average thickness of the earth's crust under the continent is about 35 hectares, and the thickness of the earth's crust under the ocean is only about 5 10 km. The thickness of the mantle is about 2,865 km; The average thickness of the Earth's core is about 3,400 km.

So the ground is 6300 kilometers thick.

The sky is high, and nature is counted from the ground. But where does it end? It usually refers to the height of the atmosphere.

In the past, it was thought to be about 800 kilometers thick, but it has been detected that there is still air at an altitude of 1,000 to 2,000 kilometers above the ground. For almost two decades, according to the results of expeditions to artificial earth satellites and space rockets. At altitudes of 2,000 to 3,000 kilometers, gas molecules were also found.

At an altitude of 16,000 kilometers above the Earth, there are traces of gas. What about underground? Scientists reasoned:

The interior of the earth can be divided into concentric circles with different properties, such as the crust, mantle, and core. The Earth's crust is more than 60 kilometers thick on average on the continents. The lithosphere, on the other hand, is the stratigraphic sphere from the back of the earth's crust to a depth of 1,200 kilometers.

Between the lithosphere and 2,900 kilometers above the ground, it is called the mesosphere, or by the median. The part below the mesosphere to the center of the earth is the core with a radius of 3,471 kilometers, that is, the outer core of the earth is 2,200 kilometers thick on average, and the radius of the inner core is 1,271 kilometers. At present, humans have only penetrated 8 to 10 kilometers, and they are far from breaking through the earth's crust.

How high is 3 days, which usually refers to the height of the atmosphere. In the past, it was thought to be about 800 kilometers high, but later it was detected at 1000-2000 kilometers.

Rice has air present. In the past 20 years, according to the investigation of artificial earth satellites and space rockets, there are still traces of gas at an altitude of 2,000-3,000 kilometers. Scientists believe that the Earth's interior can be divided into concentric layers of different properties such as the crust, lithosphere, mesosphere, and core.

The thickness of the Earth's crust on the continent is 60 km on average; The lithosphere, on the other hand, is the layer below the earth's crust to a depth of 1,200 km; The interval between below the lithosphere and 2,900 kilometers above the ground is called the mesosphere or interlayer; Below the mesosphere to the center of the Earth is the core with a radius of 3,471 kilometers, that is, the Earth's core, the outer core averages 2,200 kilometers, and the inner core has a radius of 1,271 kilometers. Therefore, the "thickness of the ground" is about 7,631 kilometers. There is a saying in my country that "I don't know the height of the sky", which is a metaphor for short-sightedness and arrogance.

However, with the rapid development of science and technology, the sky is no longer mysterious. Three scientists from the former Soviet Union once carried out an exhaustive high-altitude survey in a special balloon. According to the data, the sky was always blue below an altitude of 8 6 km; When the balloon rises to an altitude of 10 8 km, the sky is dark blue; Then, when it rises to an altitude of 13 km, the sky turns a dark purple; When approaching an altitude of 18 km, the sky was pitch black because the air was unusually thin and the light was no longer scattered.

Therefore, the height of the veritable "blue sky" is about 10 kilometers above the ground.

Heaven and earth are felt by the world one by one, and such a vast space is just a feather in the universe