The apparent movement of stars in the night sky is due to the Earth's rotation on its axis. As the Earth rotates, different parts of the sky become visible, causing the stars to appear to move. Additionally, the Earth's revolution around the Sun also plays a role in the changing positions of stars in the sky throughout the year. This change is due to the fact that as the Earth orbits the Sun, different constellations become visible in different seasons. So, the apparent movement of stars in the night sky is a result of the Earth's rotation and revolution around the Sun.
