Abstract
Cosmologists are facing mysteries. Some of which is dark energy, the overall shape of the universe, the density of the universe, etc. The discovery of the current fast expansion of space fundamentally altered cosmology and the outlook for all life. It appears that neither the hopeful hypotheses of a universe that is expanding continuously (but at a slower rate) nor one that is collapsing exist anymore. The result appears to be very bleak. This paper aims to show what have the scientific field achieved in these topics and the history behind how did these mysteries arise. This paper discusses the latest research on dark energy and its influence on our understanding of the universe. The dark energy, which is thought to be described through its equation of state and other powerful equations, may be the key to some of the mightiest questions in the history of humanity. Our analysis used prominent cosmological models to explain the ambiguity of dark energy and its properties, the overall shape of the universe and whether it has positive, negative, or flat curvature, and how the density of the universe constituents influences the progression of the universe. We concluded through this paper that dark energy’s ambiguity influences our understanding and conceptualization of our universe.