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Baryons are hadrons (particles composed of quarks) with an odd number, at least 3, of valence quarks. The term is also often used in astrophysics, e.g. "baryonic matter", with a much looser definition understood to mean any matter composed mostly of baryons, but which may also include leptons and other particles, often in opposition to "dark matter".
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How do trace element abundances show that dark matter exists in both baryonic and non - bary...
I can't seem to find an answer to this question anywhere, any help would be greatly appreciated.
Thanks in advance.