Why are there fewer stars in the night sky in winter than in summer?

0 1 In summer, our night sky faces the center of the Milky Way, while in winter, it faces the outside. The distribution of stars in the Milky Way galaxy is uneven, and it becomes denser in the middle, so there are fewer stars in the night sky in winter than in summer.

The Milky Way is a huge galaxy with a radius of about 50,000 light years. The area near the center of the Milky Way is a densely populated area with fewer stars near the edge of the Milky Way. The sun is about 26,000 light-years away from the center of the Milky Way, slightly tilted to the edge of the Milky Way.

Because it takes a year for the earth to go around the sun, in summer the earth rotates between the center of the Milky Way and the sun, and the widest, densest and brightest central part of the Milky Way just appears in the night sky, so many stars can be seen in summer. In winter, the earth moves between the edge of the Milky Way and the sun, and the central part of the Milky Way can only be seen during the day. However, due to the strong sunshine during the day, we can't see the stars. At night, we see that the edge of the Milky Way is very thin, and there are few stars there, so there are fewer stars in the night sky in winter than in summer.

Actually, it has something to do with the weather on earth. There are more stars in summer than in winter? This proposition itself is wrong, specifically, it should be that there are more stars in summer nights than in winter nights in the northern hemisphere. The southern hemisphere is not like this, so the above answer is not correct. In my opinion, the main reason is that it is much colder in winter, and thick clouds block the stars in space. Moreover, the pollution in the northern hemisphere is much greater than that in the southern hemisphere, and human activities make the night sky insufficient? Pure? Can't you see that the night sky in cities is usually red? Can you still see the stars in this environment?

There are about 1 100 million star cells in the whole galaxy, which are roughly elliptical in distribution. In summer, the widest, densest and brightest part of the Milky Way appears in our sky at night. In other seasons, some of the brightest parts appear in the daytime, some in the dusk, some in the early morning and sometimes near the horizon, so it is not easy to see, so we see more stars in summer nights than in winter nights.

On the other hand, the answer is that fewer people go out in winter nights, and the cold gives people a feeling of loneliness, so the stars are the same in their eyes, but they are much less psychologically.