Question

according to measurements made by the wilkinson microwave anistropy prove (WMAP), which material is by far the most plentiful in the universe?
a. neutrinos
b. baryonic matter
c. dark energy
d. dark matter

Answer 1

According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), the most plentiful material in the universe is **c. dark energy**. Dark energy constitutes about 68% of the universe, while dark matter makes up about 27%, baryonic matter (ordinary matter) accounts for roughly 5%, and neutrinos represent an even smaller fraction.