Luis Masperi
Centro Latinoamericano de Física
Av. Venceslau Bráz, 71 Fundos
22290-140 Rio de Janeiro, Brazil
E-mail: masperi@cbpf.br
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.