How can you determine if a celestial object is a star or a planet?

One way to determine if a celestial object is a star or a planet is by looking at its characteristics. Stars are typically much larger and hotter than planets, and they emit their own light. Planets, on the other hand, do not produce their own light and instead reflect light from a star. Additionally, planets orbit around stars, while stars do not orbit other objects. By observing these characteristics, astronomers can differentiate between stars and planets.