Hindu cosmology is a way of thinking about the world and how it works. Hindus believe that the world is made up of many different levels or realms, and that people move between those realms when they die and are born each life. They also believe that things like the stars, the sun, and the moon all exist in their own realms, and that each realm is connected to others. Hindu cosmology explains how the universe works, why things happen in certain ways, and tells stories about different gods or deities that help guide people in life.