Question

Which types of baryonic matter are most abundant in the universe? Select the two correct answers.
A) helium
C) hydrogen
According to measurements made by the Wilkinson Microwave Anisotropy Probe (WMAP), which material is by far the most plentiful in the universe?
D) dark energy
The ________ of dark matter causes baryonic gas and dust to _______
Gravity
clump together
hope you pass

3 years ago