COSMOS refers to the universe as an orderly and harmonious system. It encompasses everything that exists, including galaxies, stars, planets, and all forms of matter and energy. The study of the cosmos involves various scientific fields, such as astronomy, astrophysics, and cosmology, which explore the origins, evolution, and structure of the universe. The term "cosmos" is often contrasted with "chaos," highlighting the idea of an organized universe. The concept has been influential in philosophy and science, inspiring thinkers like Carl Sagan and Stephen Hawking to explore the mysteries of existence and our place within the vast universe.