Dark matter is thought to make up roughly 85 percent of all matter in the observable Universe, but little is known about this mysterious — something. Satellite galaxies orbiting around the main mass of the Milky Way galaxy could help researchers unravel the one of the great mysteries of modern science — dark matter. A new theory called self-interacting dark matter (SIDM) could explain the behavior of two small companion galaxies called Draco and Fornax, researchers at the University of California, Riverside report. These bodies are among nine bright satellite galaxies accompanying the Milky Way. Simulations conducted by a team…
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