New Spacetime Geometry Could Explain Universe‘s Expansion Without Dark Energy
A newly published study proposes a radical shift in cosmological understanding: the accelerating expansion of the universe may not require the existence of dark energy, but can instead be explained by a revised understanding of spacetime geometry. Researchers believe this discovery unlocks “completely new possibilities” for deciphering the essential laws governing the cosmos.
For decades, scientists have attributed the universe’s accelerating expansion to a mysterious force called dark energy, which makes up roughly 68% of the universe and remains largely unknown. This new model, detailed in the Journal of Cosmology and Astroparticle Physics, suggests that a more nuanced mathematical description of spacetime itself could account for the observed expansion, potentially eliminating the need to invoke dark energy altogether. This challenges a cornerstone of modern cosmology and could reshape our understanding of the universe’s composition and evolution.
The research, published October 2025, indicates that a generalized spacetime geometry offers a compelling alternative description. “This is an exciting indication that we are at least partially able to explain the accelerated expansion of the universe perhaps even without dark energy,” stated a researcher involved in the study.
This potential paradigm shift focuses not on what is driving the expansion, but how expansion is perceived within the framework of spacetime. By fundamentally revising the mathematical description of spacetime, the study’s results suggest a path toward a more complete and accurate model of the universe. The findings open avenues for further investigation into the natural laws of the cosmos and could lead to a deeper comprehension of the universe’s origins and ultimate fate.
