A recent survey of the universe suggests that the concept of dark energy, believed to be a constant force, may need to be reevaluated. New data indicates that dark energy could be changeable, fluctuating in strength over time. This finding challenges the long-held assumption that dark energy is constant and unchanging. The study, conducted by the Dark Energy Spectroscopic Instrument (DESI), has raised the possibility that dark energy evolves with time, potentially impacting the future of the cosmos. While this discovery is not yet confirmed, it has sparked significant interest and could lead to a paradigm shift in our understanding of the universe. The DESI project, designed to create a comprehensive map of cosmic history, unexpectedly revealed this potential deviation from the current model of dark energy. Further research and data analysis will be crucial in determining the true nature of dark energy and its implications for cosmology.