http://www.nsf.gov/od/lpa/news/02/pr0299.htm "The new results provide additional evidence to support the currently favored model of the Universe in which 30 percent of all energy is a strange form of dark matter that doesn't interact with light and 65 percent is in an even stranger form of dark energy that appears to be causing the expansion of the Universe to accelerate. Only the remaining five percent of the energy in the Universe takes the form of familiar matter like that which makes up planets and stars." Details of the instrument used are here, http://cosmology.berkeley.edu/group/swlh/acbar/
