Add Yahoo as a preferred source to see more of our stories on Google. DECam is just one of the methods this study used to help reveal the nature of space itself. (Credit: DOE/FNAL/DECam/R.

The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study suggests this mysterious ingredient may not be necessary after all. Using an ...

Scientific discovery rarely arrives in a single, dramatic moment. It usually emerges through careful experiments, revised equations, unexpected field observations, and years of incremental progress.