cosmological model

A cosmological model is a scientific framework that explains the overall structure, origin, and evolution of the universe. It describes how galaxies, stars, and other cosmic structures formed over billions of years, based on principles like general relativity and observations such as cosmic microwave background radiation. The most accepted model, known as the Big Bang theory, suggests the universe began as a hot, dense point and has been expanding ever since. These models help scientists understand the universe's past, present, and potential future by combining physics, astronomy, and mathematics.