Concept explainers
The correct statement
Answer to Problem 1QP
Option (d)
Explanation of Solution
According to
The critical density is proportional to the square of the Hubble constant, which is used in measuring the expansion rate of the universe.
Comparing the critical density to the actual density can help scientists to understand the cosmos.
Conclusion:
The density of the universe dictates whether it will be open, closed, or flat. Therefore, option (d) is correct.
The density of the universe dictates whether it will be open, closed, or flat. Therefore, option (a) is incorrect.
The density of the universe dictates whether it will be open, closed, or flat. Therefore, option (b) is incorrect.
The density of the universe dictates whether it will be open, closed, or flat. Therefore, option (c) is incorrect.
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Chapter 22 Solutions
21ST CENTURY ASTRONOMY:STARS+GALAXIES
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