Celestial objects are natural physical entities found in the universe, including stars, planets, moons, asteroids, and comets. These objects are studied in the field of astronomy, which seeks to understand their properties, behaviors, and interactions. For instance, the Sun is a star at the center of our solar system, providing light and heat essential for life on Earth. In addition to stars, celestial objects also encompass planets like Mars and Jupiter, which orbit stars and can have their own moons. The study of these objects helps scientists learn about the formation of the universe and the potential for life beyond our planet.