The cosmos, a vast expanse that has captivated human imagination for mil- lennia, is a dynamic arena where stars, galaxies, and mysterious dark matter interact in a dance choreographed by the fundamental laws of physics. Under- standing the evolution and behavior of the universe is a pursuit that has long fueled the curiosity of physicists and cosmologists. This article embarks on a theoretical exploration of cosmological models within the framework of General Relativity, delving into the intricate tapestry of the cosmos. General relativity, introduced by Albert Einstein in the early 20th century, has since become a cornerstone of modern physics. It provides a robust frame- work for understanding the gravitational interactions that dominate at cosmic scales. The theory’s elegance lies in its ability to describe gravity as the curva- ture of spacetime, allowing for a profound comprehension of the cosmos. The success of Einstein’s theory in predicting the behavior of large-scale phenom- ena, where gravity plays a dominant role, has ignited the interest of researchers worldwide.