What state of matter does dark matter have?

Dark matter has an equation of state known as a “dust.” A dust is a state of matter which has energy (mass) density, but no pressure. This simply means that gravity can cause this matter to collapse under its own gravity. read more

Dark matter may not be made up of the matter we are familiar with at all. The matter that makes up dark matter could different. It may be filled with particles predicted by theory but that scientists have yet to observe. Because scientists can't see dark matter directly, they have found other ways to investigate it. read more

Van Dokkum led a team that identified the galaxy Dragonfly 44, which is composed almost entirely of dark matter. The familiar material of the universe, known as baryonic matter, is composed of protons, neutrons and electrons. Dark matter may be made of baryonic or non-baryonic matter. read more