Most of the Universe Composed of Dark Energy, Researchers Show
A UC Merced researcher and her teammates around the world have succeeded in measuring the total amount of matter in the universe for the second time.
A new paper in the Astrophysical Journal, titled “Constraining Cosmological Parameters using the Cluster Mass-Richness Relation,” shows that matter makes up 31% of the universe, with the remainder consisting of dark energy — answering one of the most interesting and important questions in cosmology.