We are surrounded by stars. Constellations 88 official ones in all - cover the whole sky.
Astronomers now use the constellations mainly as a convenient way to name regions of the sky.
In reality, the Earth rotates and circles the Sun, but it is convenient to say the Sun, Moon, and stars move around the Earth on the celestial sphere. This was accepted as the actual situation by ancient people. The sky appears to rotate around the Celestial poles - actually the Earth turns the opposite direction. The Celestial Equator is tilted 23.5 degrees to the Ecliptic. The tilt of C. Equator with the Ecliptic, or just as accurately the tilt of Earth's rotation axis with the axis of its orbit around the Sun, is what causes the seasons.