astronomical model

An astronomical model is a systematic way of understanding how celestial objects like stars, planets, moons, and galaxies behave and relate to each other. These models use scientific observations, physics, and mathematics to describe motions, positions, and phenomena in space. For example, early models depicted Earth at the center of the universe (geocentric), but modern models place the Sun at the center (heliocentric). Models help us predict phenomena such as eclipses, planetary movements, and the expansion of the universe. They are essential tools that evolve with new data, providing a framework for understanding the cosmos.