what is non baryonic matter ?
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Non-baryonic matter is matter that, unlike all the kind kinds of matter with which we are familiar, is not made of baryons (including the neutrons and protons found in all atomic nuclei). ... This attribute could be used to measure the contribution of non-baryonic matter to the total amount of mass in the universe.
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Explanation
non-baryonic-dark-matter. Noun. (uncountable) (astronomy, physics) dark matter comprised of elementary particles whose composition is as yet unknown, but is presumed to be unlike normal protons, neutrons and electrons etc.
This is often referred to as the 'black holes have no hair' theorem which simply states that black holes do not have properties such as baryonic or non-baryonic. Objects in the Universe composed of baryonic matter include: Clouds of cold gas