The Mystery of Dwarf Galaxies

Astronomers disagree about the distribution of stars in our simulations and what we see out there in the universe. A lot of astronomers think that probably this will be resolved if we improve our abilities to discover these dwarf galaxies. Recently they found eight new Milky Way dwarf galaxies that they hadn't spotted before because they are ultra faint. They're basically dark matter galaxies with a little sprinkling of stars in them.