Summary:
- The article discusses new research that suggests the universe's "engine" - the dark energy that drives the universe's expansion - may not be as simple as previously thought.
- The research, led by scientists at the University of Portsmouth, indicates that dark energy may not be a constant, but rather a dynamic force that is changing over time.
- This finding could have significant implications for our understanding of the universe's evolution and the nature of dark energy, which makes up about 68% of the universe.