Dark Matter

Dark Matter is a form of invisible matter found in our Universe. It is invisible because it does not interact with electromagnetism. It also does not interact with atoms because unlike most matter, dark matter does not have an interaction with the strong nuclear force. Virtually the only way this matter can be detected is through gravitational effects on ordinary matter or by blocking light through gravitational light bending. Dark matter is believed to be made of neutrinos, axions, and other odd particles. Dark matter makes up a major part of the Universe's mass, and contributed to the beginning of the Universe.