Do the constellations around Polaris move in two directions in an obvious way?

First of all, only planets are said to be retrograde. The reason is simple, because the orbits of the earth and other planets are elliptical. Meanwhile, the Earth and other planets may be perihelion or aphelion. Seen from the earth, the trajectories of planets in the sky will periodically change the direction of motion. Although all the stars and planets seem to move from east to west in response to the rotation of the earth every night, the peripheral planets tend to move slowly from west to east relative to the stars. This kind of motion is the normal motion of the planet, so it is considered anterograde. However, because the orbital period of the earth is shorter than that of the outer planets, it will periodically surpass the outer planets, resulting in the so-called retrograde.

The apparent axis of a planet relative to a star. In conjunction, the planets also move relative to the stars on the celestial sphere. Under normal circumstances, planets move from west to east among stars, which is called anterograde. However, when the planet approaches the earth in orbit, the inner planet before and after the polar closure and the outer planet before and after the collision with the sun turn west on the celestial sphere, which is called retrograde. After a while, the friends moved on. In a short time from anterograde to retrograde, or from retrograde to anterograde, the planet stagnates among the stars, which is called stagnation.

The farther away from the earth, the higher the frequency of retrograde.

No star will go retrograde, because the deviation of the earth's orbit is equivalent to that of any star, which is even more insignificant. The whole orbit of the earth is a tiny point in the universe for other stars. Do you think there will be a retrograde change when you look at things from one point? And the big dipper will not change. Astronomically speaking, the Big Dipper can be used as a star clock, which shows the accuracy of its orbit. It can be used as a clock, which shows that it is at least a uniform circular orbit and absolutely impossible to go backwards. Remember, retrograde is the patent of this planet! ! ! ! !