Question

According to the measurements made by the WMAP, which material is by far the most plentiful in the universe?

Dark matter
Dark energy
Baryonic matter
Neutrinos

Answer 1

According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), the most plentiful component of the universe is dark energy. It accounts for approximately 68% of the total energy density of the universe. Dark matter follows with about 27%, while baryonic matter (ordinary matter) constitutes only about 5%. Neutrinos are also present but are a very small fraction of the total energy density.

So, the correct answer is **dark energy**.