Matter In The Universe

Baryonic Matter, where the elements are made out of protons, neutrons, and electrons, is a small part of the content of the universe. The cosmological models support the idea that the total visible mass in the form of stars, planets, satellites, living beings, etc. (it's visible baryonic matter) plus the mass contributed by the energy, is only 4.6%. The rest of the mass is considered to be in the form of dark matter (23%) and dark energy (72.4%). However, there is no direct evidence for these forms of matter and energy are a subje…