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We describe the different components of the present energy of the universe starting from the well established radiation and luminous matter, following with the dark baryonic matter determined by primordial nucleosynthesis, the likely cold dark matter with its theoretical candidates, the sure but not yet defined hot dark matter represented by neutrinos and the evidence of dark energy given by cosmological constant, vacuum energy or quintessence.
L. Masperi (Mon,) studied this question.