Celestial objects refer to those objects that are present outside the Earth's atmosphere and are studied by astronomers. The universe is vast and is home to an array of celestial objects, each with its unique characteristics and features. Some common synonyms for celestial objects include heavenly bodies, astronomical bodies, cosmic objects, astral bodies, celestial bodies, and space objects. The term celestial object is often used to describe stars, planets, asteroids, comets, and other bodies that exist beyond the Earth's atmosphere. Astronomers study these celestial objects to learn about the origin and evolution of the universe and better understand its vastness and complexity.