What constellations can be observed all year round on the active star map? Why?

There are Ursa minor and Cepheus. Strictly speaking, you should specify the time. Ursa major can't be seen at eight o'clock in autumn. Come out in the morning. Anyway, they are near the North Pole and will come out in a few hours. Anyway, tell you, this constellation has Draco, Cassiopeia and Ursa major. The rest will basically go down with time. These constellations are frequent visitors. Maybe you saw the fairy queen at night, but you didn't see the bear. He came out at midnight. And the fairies go down all year round, so you can find the time when they come out, and you can see them in any season. The celestial sphere has North Pole and South Pole. It is not so much the rotation of the celestial sphere as the intersection of the extension line of the earth axis and the celestial sphere. Relatively speaking, we think it is the rotation of the celestial sphere. The constellations in the sky will move from east to west along the north and south poles (that is, the intersection of the earth axis and the celestial sphere) with this ball. (Because of relative motion, it is opposite) So you can understand the law of motion. Polaris is close to the North Pole. You can always see the North Pole, so you can always see the North Star (at least before you die). Strictly speaking, I should answer some more questions about the Antarctic constellation. At least you can see them when you travel in the southern hemisphere. I know you don't care about this, but I want to talk about a few-Antarctic constellation (which is very close to the South Pole (actually not that close, at least farther from the North Pole than Polaris), but three stars are too dark, so there is no invivo), Southern Cross, flying fish, Tian Yan constellation (many, dozens of small constellations, much more than those near the North Pole, but they are all small constellations, which are very dark).