Why are there fewer stars in the sky and you can t see 20

From a macroscopic point of view, because: (1) The universe is still expanding, and the distance between the stars is constantly expanding, emitting the same intensity of light, but as the distance increases, the brightness will naturally become weaker and weaker, and you can't even see it with the naked eye. (2) Over time, some stars will metamorphose (not emit) because their luminous energy is burned out, so you will naturally not see them.

Of course, for these two reasons, you are less likely to feel that there are fewer stars in the sky. Another more important reason may be that your location is affected by the climate, such as air pollution, cloud blocking, too much light around you, etc.

When I was a child, I liked to look at the stars, how many nights, looking up at the starry sky, my heart was swimming, imaginative, distant and pure. Listen to the old man: the people on the earth and the stars in the sky are corresponding, the stars have been looking at the world for thousands of years, looking forward to people in the cycle of suffering in life and life, out of the mud and unstained, in the suffering to achieve the beauty of life sublimation, pure return.

In the past, people talked about the unity of heaven, earth and man, and the universe, and recently I have seen a lot of ancient prophecies, saying that it is about this time, that is, when people don't believe in anything, don't believe in retribution, don't believe in God and don't believe in the way of heaven, when many people are unknowingly turned bad, if people still choose to continue to be bad, continue to believe in nothing, there will be a lot of natural and man-made disasters, and the stars in the sky will also decrease a lot... I wonder if they are sad to see people like this? It is said that there is a Dharma in China that can make people better physically and mentally, return to their roots, and bring people a better future.

But it was distorted by China's **, and many Chinese who did not know the truth believed ** and missed the most precious thing... Either way, let's work together so that our hearts are no longer lost, and maybe each of us will have the opportunity to usher in a starry sky in our own lives.

It may be caused by too many dust particles, so the sky is mostly gray or that . Yes, it's light pollution, like neon lights, etc., and most of the stars in the starry sky are stars, so they are far away (the closest light years outside the sun). There used to be red gas in Paris, and I think there was a reason for the personal perspective, or the weather was not ideal, etc.

In winter, the Earth turns to the outer extension of the center of the Milky Way and the Sun, that is, the Sun is between the Earth and the Milky Way, and when you look at the sky at night, you look at the empty universe far from the center of the Milky Way, and the stars are sparse...

In the summer, the earth turns to the other side, and when you look at the sky at night, you look at the center of the Milky Way, and it is naturally full of stars...

When the clouds are thicker, the light is blocked, and the visibility is less.

There are fewer stars in the sky, maybe it's because you don't see them. Or maybe you don't see the air pressure problem there.

Because the Earth's atmosphere has changed, the pollution has become greater, and the universe has expanded.

urban lighting, resulting in aggravated light pollution; And air pollution makes light pollution even worse.

It's air pollution and light pollution that are getting worse and worse. Protect the environment, O human beings.

There may be a real lack of stars in the sky, and after 1054 A.D., humans have observed several supernova explosions, either with the naked eye or with telescopes.

However, this number has little effect on the night sky, and it seems that the lack of stars is due to atmospheric and light pollution. Due to the long-term use of lasers such as electric photoelectric screens, it has really invaded people's natural luminosity, and most people's physical vision has decreased, the high light is blurred, and the near vision is more and more, which is becoming more and more serious.

Indeed, the stars still hang in the blue sky, without any change, and shine at night for the benefit of people, and never disappear in the night.

The development of industry and urbanization has made the earth's atmosphere full of dust in a large area, although it may not be visible to the eyes during the day, but these dusts can block part of the starlight, so that the stars that are not very bright are blocked; The development of urbanization makes the distribution of human beings more concentrated, and the city lights are stronger than the distant starlight, which can interfere with the human visual system, and sometimes the hands are rolled up and the eyes look at the stars through the gaps, and the stars feel brighter, because of the strong light source interference around, which also explains why the stars have always existed, but they cannot be seen during the day.

In fact, the number and range of stars visible to the naked eye on Earth is very limited, the Milky Way.

With a diameter of 200,000 light-years, there are more than 200 billion stars, but humans can only see brighter stars within 1,000 light-years.

If the air pollution is serious and the light pollution is very serious, there will be even fewer that can be seen.

Last year (or at the beginning of this year, I can't remember exactly) there was a massive power outage in Japan, residents were at home looking at the stars, and once again saw the Milky Way that they hadn't seen for many years, and city lights had a great impact on observations, which is why both large optical telescopes and radio telescopes were available.

It's all built away from the crowds.

Because the atmosphere is now more polluted, there are many solid particles in the air that block the view, so there are fewer stars in the sky now.

It's because the air pollution is getting worse and worse, there are a lot of particles floating in the sky, and there is even haze, so you can't see the stars anymore.

I think it's the over-exploitation of the environment that has caused the environment to be polluted, so that some substances in the atmosphere have obscured the stars.

One. Sometimes there are stars in the sky.

It is because there is little or no light interference at low altitudes.

Such as. During the nocturnal hours when there is no moon.

You will see a lot of stars.

At the same time, there are few or no lights on the ground.

Two. Sometimes there are no stars in the sky.

First, all kinds of lights on the ground are stronger.

obscuring one's view.

It's like the "sky blue" when the sun obscures the darkness of the sky during the day

The second is that the dark clouds in the night obscure the starlight.

Or "the moon is bright and the stars are rare", you won't see a lot of stars.

All right. What others say is better than seeing and experiencing it yourself.

Except what others say and what is in the books.

Knowledge comes from observation, understanding, and analysis.

When there are fewer clouds, the visibility is high, and more stars can be seen. On the contrary, when there are many clouds, the stars are obscured, and the stars are naturally invisible. And when the moon is too bright, the moonlight will obscure the weaker stars, and to the naked eye it will appear that there are fewer stars.

In the past, factories used to work during the day and rest at night, but now they have a day break and a night job.

Observing stars on the Earth's surface is affected by atmospheric turbulence, air quality, and the environment, so large observatories are located on high mountains far from cities to reduce these disturbances. For people living in cities, the reduced transparency of the atmosphere due to air pollution leads to fewer stars that can be seen, which is the first reason; Secondly, due to the bright city lights at night, this creates a kind of light pollution, which leads to the inability to see the starlight against the dark background, which is the second reason.

I think it's because of the air pollution in recent years, which has made it harder and harder for us to see the stars in the sky. In today's industrialized world, air quality is a concern. When I was a child, I could see the starry sky every night, but now it's really hard to see it anymore.

It should be that the air pollution is serious. Now, with the development of society, automobile exhaust and urban exhaust are directly emitted into the air, and the air pollution is serious, blocking the stars.

Nature's revenge on over-human exploitation.

It's because of 1Air pollution.

2.It's cloudy today.

Because of air pollution, light pollution, and heat convection. Most of the stars in the sky are now invisible, but there are actually three root causes. The first is air pollution.

Nowadays, the development of industry and urbanization has filled the earth's atmosphere with dust over a large area, which will block some starlight, so that some stars that are not very bright will be obscured.

The second is light pollution, in big cities, street lights, neon signs on billboards, car headlights and lighting of various buildings, these colorful bright lights are constantly flickering, and the light emitted is reflected in the sky, and the lasers are stronger than the stars at night, so it is difficult for us to see them. This is actually the same as not seeing the stars during the day, except that the lights are not as bright as the sun's rays.

The third is thermal convection, which is mainly used by human beings to use fuel, domestic electricity, etc., which increases the disturbance of heating the air, and the starlight is interfered with in the direct atmosphere and scattered, and the visibility is also reduced.

The atmosphere pollutes the sky, so that the stars are not bright enough to pass through that layer of pollution,,, so you feel like there are fewer stars.

Because the stars are not counted with the eyes, but with the heart. When we grow up, we don't think about how high the sky is, how many stars there are.

There are actually a lot of stars in the sky, and they have never been less, this is why my city is very polluted nowadays, and the polluted gas floats in the air, covering the stars, and we see very few stars, or even none. This phenomenon is enough to tell us that we must protect the environment and reduce pollution.