The displacement of the North Star relative to the solar system is too small compared to the distance between the two, so it takes thousands of years to see the North Star on Earth to change significantly.
What needs to be named is that the North Star is not a fixed star, but a star with the right north direction closest to the Earth's rotation axis and the higher magnitude of . The North Star is not a completely immovable star. In fact, there are many Polaris in history. As long as it is the brightest star in the north, people will call it the North Star. The reason why it can point to the north is that it is a star that people in the Eastern Hemisphere can see when they look up, and it happens to be above the north that people can recognize. Therefore, in history, any star directly to the north pointed to the earth axis can be called the North Star. The famous Big Dipper Star is also an important symbol for identifying the North Star. This means that the North Star is different at different times. The current Polaris is " Gou Chen Yi ", which is 434 light years away from the earth, and the magnitude of the star is 1.97.
Now Gou Chenyi is slowly moving away from the North Pole point . In another 12,000, Vega Star will replace Gou Chenyi and become the new North Pole.
No matter which star becomes a North Star, it is within our Milky Way , because it is impossible for us to see a single star outside the galaxy with the naked eye.
Polaris must be in the Milky Way. Our solar system orbits the Milky Way, so other stars also rotate in the same direction around the Milky Way. Because the scale of the Milky Way is too large (the diameter is about 100,000 light-years), the solar system rotates around the Milky Way at a speed of about 240KM/S, which is relatively very slow, and it takes more than 200 million times to circle the Milky Way.
