Dark Energy Is Real, Despite Claim to the Contrary

The galaxy cluster Abell 1689 is famous for the way it bends light in a phenomenon called gravitational lensing. Study of the cluster has revealed secrets about how dark energy shapes the universe. (Image: © NASA, ESA, E. Jullo (JPL/LAM), P. Natarajan (Yale) and J-P. Kneib (LAM)) A new study suggests that dark energy might not be real after all. But other scientists have found major flaws with this bold claim. Dark energy is a mysterious and hypothetical form of energy that is used to explain the accelerating expansion of…