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

baryonic matter
• dark matter
• neutrinos
• dark energy
Which types of baryonic matter are most abundant in the universe? Select the two correct answers.
• hydrogen
• oxygen
• helium
• carbon
• nitrogen

1 answer

According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), the material that is by far the most plentiful in the universe is dark energy.

For the second part of your question regarding the types of baryonic matter that are most abundant in the universe, the two correct answers are:

  • hydrogen
  • helium

Hydrogen is the most abundant element, followed by helium.