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The Density Parameter Ω0 Measures the Total Mass-Energy Density in the Universe

Question 68

Multiple Choice

The density parameter Ω0 measures the total mass-energy density in the universe from all sources as a function of the critical density. How much of this is from ordinary atomic matter and how much from dark matter?


A) About 5% is from ordinary matter and another 26% from dark matter.
B) About 24% is from ordinary matter and the remaining 96% is from dark matter.
C) About 50% is contributed by each of these sources.
D) About 96% is from atomic matter and the remaining 4% is from dark matter.

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