The area of study that focuses on celestial objects and phenomena is known as astronomy. This field encompasses the study of stars, planets, comets, galaxies, and the universe as a whole. Astronomers utilize various tools, such as telescopes and satellites, to observe and analyze the behavior and characteristics of these celestial entities. Astronomy includes sub-disciplines like astrophysics, which examines the physical properties of celestial bodies, and cosmology, which studies the universe's origin and evolution.