According to measurements made by the Wilkerson Microwave Anisotropy Probe (WMAP) , which material is by far the most plentiful in the universe?

Answer 1

According to measurements made by the WMAP, dark matter is by far the most plentiful substance in the universe. Dark matter is a form of matter that does not emit, absorb, or reflect electromagnetic radiation, making it invisible to telescopes. It is estimated to make up about 27% of the universe's total mass-energy.