Only about 5 of the energy in the universe is composed of


Only about 5 % of the energy in the universe is composed of baryonic matter.

A) Estimate the average density of baryonic matter in the observable universe with a radius of 14 billion light-years that contains 1011 galaxies, each with about 1011 stars like our Sun.

B) Estimate the density of dark matter in the universe.

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Physics: Only about 5 of the energy in the universe is composed of
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