Current observations suggest that the density of luminous matter (Wlᵤmᵢnₒᵤs),all matter (Wmₐttₑᵣ),and dark energy (WL)are:
A) Wluminous = 0.1, Wmatter = 0.3, WL = 0.7
B) Wluminous = 0.02, Wmatter = 0.5, WL = 0.5
C) Wluminous = 0, Wmatter = 0.1, WL = 0.9
D) Wluminous = 0.02, Wmatter = 0.3, WL = 0.7

Question

Quizplus · Accepted Answer

The observed density of luminous matter is estimated to be about 0.02, while the total matter density, including both luminous and dark matter, is calculated to be about 0.3. This helps us to narrow down the possible answers to either option (B) or option (D). However, further observations suggest that dark energy contributes about 70% of the total energy density of the universe, which points towards option (D) as the correct answer. Therefore, the best choice(s) is D, as it corresponds to the current observational estimates of the matter and energy content of the universe.

Current Observations Suggest That the Density of Luminous Matter (Wlᵤmᵢnₒᵤs),all