Baryonic And Non-Baryonic Matter
- Familiar material of the universe contains protons, neutrons and electrons, also known as Baryonic Matter.
- Dark matter is made up of the same plus also non-baryonic matter (neutrinos, free electrons, supersymmetric particles, axions, and black holes) which is hard to detect.
- The objects of the universe that may contribute to dark matter are dim brown dwarf stars, white dwarf stars and neutron stars.
- Supermassive black holes, the size of which is 21 billion times the mass of our Sun, can make up a lot of dark matter by themselves.
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