Here's a breakdown:
* Astronomy focuses on celestial objects like stars, planets, galaxies, nebulae, and other phenomena in space. It involves observing, analyzing, and understanding their properties, movements, interactions, and origins.
* Cosmology is a branch of astronomy that specifically focuses on the origin, evolution, and structure of the universe as a whole.
While there are other sciences that contribute to our understanding of the universe (like physics, geology, and even biology), astronomy is the primary field dedicated to its study.