Question

approximately which percentage of universe do galaxies occupy

A. 5%
B. 2%
C. 20%
D. 10%

Answer 1

The correct answer is A. 5%. Galaxies, along with the stars, gas, and dust they contain, make up about 5% of the total energy density of the universe. The majority of the universe is made up of dark energy (around 68%) and dark matter (about 27%).