What Satellite Galaxies Can Teach us About Dark Matter
Satellite galaxies orbiting the Milky Way could help physicists test a new theory of dark matter
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…