New research from the DESI project suggests that dark energy, once thought to be a constant force, may actually be changing over time. This challenges long-held cosmological models that assume a stable influence of dark energy on the universe’s expansion. By mapping 15 million galaxies, DESI’s data raises new questions about cosmic evolution. Scientists are now re…New research from the DESI project suggests that dark energy, once thought to be a constant force, may actually be changing over time. This challenges long-held cosmological models that assume a stable influence of dark energy on the universe’s expansion. By mapping 15 million galaxies, DESI’s data raises new questions about cosmic evolution. Scientists are now re…