Cosmology is the study of the origin, evolution, structure, dynamics, and ultimate fate of the universe as well as the natural laws that keep it in order. It also includes the study of the nature of the Universe on its very largest scales.
The accelerating expansion of the universe is the observation that the universe appears to be expanding at an increasing rate, so that the velocity at which a distant galaxy is receding from the observer is continuously increasing with time.
In this article, we will have a look at some of the important physics concepts needed to understand how the universe works.
Cosmology is the astrophysical study of the history, structure, and dynamics of the universe. The word cosmology is derived from two Greek words, "kosmos" meaning the world, and "logos" meaning knowledge or science.