Here's a breakdown:

* Earth's Orbit: As Earth revolves around the Sun, our perspective of the night sky changes. Imagine standing in a field and watching a distant mountain range. As you walk, the mountain range appears to shift in your field of view. Similarly, as Earth moves in its orbit, the constellations in the night sky seem to shift.

* Earth's Axial Tilt: The Earth is tilted on its axis at approximately 23.5 degrees. This tilt causes different parts of the Earth to receive varying amounts of sunlight throughout the year, resulting in seasons. The tilt also means that as Earth orbits the Sun, different parts of the celestial sphere are visible to us in the night sky at different times of the year.

Here's a simple analogy:

Imagine you are standing on a carousel, looking out at a distant forest. As the carousel spins, the forest appears to shift in your field of view. The constellations in the night sky behave similarly, shifting due to Earth's rotation and orbit around the Sun.

In summary: The combination of Earth's orbital motion and axial tilt causes the constellations visible in the night sky to change throughout the year, resulting in different constellations being seen in each season.