Dr X Believes That the Hubble Constant Is H₀ =

question 8

Multiple Choice

Dr. X believes that the Hubble constant is H₀ = 20 km/s/Mly while Dr. Y believes it is H₀ = 24 km/s/Mly. Which statement below automatically follows?

• A) Dr. X believes that the universe is expanding, but Dr. Y does not.
• B) Dr. X believes that the Andromeda Galaxy (a member of our Local Group) is moving away from us at a slower speed than Dr. Y believes.
• C) Dr. X believes that the universe is older than Dr. Y believes.
• D) Dr. X believes that the universe will someday stop expanding, while Dr. Y believes it will expand forever.
• E) Dr. X believes that the universe has a much higher density than Dr. Y believes.

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