On the earth, which stars do the constellations in the sky revolve around? urgent

At present, the imaginary axis of the earth's rotation (that is, the earth axis) points to Polaris, so the constellation revolves around Polaris all day.

In fact, the direction of the earth's axis is also changing slowly, rotating around an airspace near Polaris, with a period of about 26,000 years, so Polaris is not fixed. About 4800 years ago, Polaris was the alpha star of Draco. It was not until about 2 100 AD that the included angle between α Ursa minor and the North Pole became the smallest (only 27'38 "). In 4000 years, Cepheus Gamma will become the North Star. Around 14000, Alpha Lyra (Vega) became the North Star.

In other words, the constellations of the whole day revolved around who was the North Star at that time.