Why different constellations are visible at different times of the year?

Different constellations are visible at different times of the year due to the Earth's orbit around the Sun. As the Earth moves, our nighttime view of the sky changes, revealing different stars and constellations. For instance, in winter, we see constellations that are opposite the Sun in the sky, while in summer, we see those that are closer to the Sun. This shift occurs gradually throughout the year, resulting in a dynamic night sky.