This project models the expansion history of the universe using the FLRW cosmology framework with matter, radiation, and dark energy. It computes the Hubble parameter, cosmological distances, the age of the universe, and acceleration measures such as the deceleration and jerk parameters. I built this project to explore how changes in cosmological parameters shape the evolution of the universe and to deepen my understanding of astrophysics. Author: Luis Palomino-Alonso. Passionate about astrophysics and mathematics.