Not taking dark energy into account, we seem to live now in a matter dominated universe,since the observed matter density exceeds the observed energy density.

Question

Quizplus · Accepted Answer

This is true according to current observational data. The observed matter density (including both normal matter and dark matter) is estimated to be about 31% of the critical density, while the observed energy density (including radiation and any other forms of energy) is estimated to be about 5% of the critical density. However, if we include the effects of dark energy, which is thought to make up about 69% of the total energy density of the universe, then we would have a universe dominated by dark energy. This is true according to current cosmological observations where the observed matter density (including both visible matter and dark matter) is greater than the observed energy density (excluding dark energy). However, it should be noted that dark energy makes up about 68% of the total energy density of the universe and is believed to be the dominant factor in the universe's evolution.

Not Taking Dark Energy into Account, We Seem to Live