In this paper, we review some detailed facts and information about dark
energy & dark matter and try to examine their existence and nature. We also seek to
extend their influence to understand various transformations of cosmological periods
that have taken place, the evidence of which can be found in the chronology of the
universe, along with the significance of dark energy and dark matter. We study the
present-case scenario regarding the evolution of the universe concerning the Friedmann
Equations, derived from Einstein’s field equations, along with some important
cosmological parameters. This analysis also underlines an effort to obtain a clear and
crisp picture towards which the universe is heading with time. We also review the
various cosmological eras found in the chronology of the universe, which was
dominated by radiation, matter, and dark energy respectively, and derive a conclusion
of what the universe might have to attain during its evolutionary course.
Keywords: Cosmic Microwave Background Radiation, Dark Energy, Dark
Matter, De-Sitter Universe, Einstein’s Cosmological Constant, FRW Metric, Λ-
CDM Model.
