This paper reflects on the most essential theories about the inception of the universe, and especially on the Big Bang Theory and its competitors. The analysis encompasses the basic features of these theories, the original conditions of the cosmos, and the observations of certain important evidence, such as the LSS and CMB. This research paper, which is based on both theoretical frameworks and observational data, therefore, provides in-depth knowledge about the current perception of the beginnings of the universe. It also describes how new technologies like artificial intelligence are forecasted to improve the cosmological models and how future missions of space observatories can also improve the base information used for generating these models. Moreover, this essay will touch on the causes of cosmic expansion, or how the cosmos expands, and the presence of dark matter and energy in the universe, which demonstrates this cosmic expansion according to the presented phenomena in the cosmos. This will benefit scientists and the audience to a good extent. The paragraph will also explore the field of astrophysics, especially its trends today, as well as examine the meanings derived from the study of the universe.
