Dr.Smith believes that the Hubble constant is H₀ = 70 km/s/Mpc.Dr.Jones believes it is H₀ = 50 km/s/Mpc.Which statement below automatically follows?
A)Dr.Smith believes that the universe is expanding,but Dr.Jones does not.
B)Dr.Smith believes that the Andromeda Galaxy (a member of our Local Group)is moving away from us at a faster speed than Dr.Jones believes.
C)Dr.Smith believes that the universe is older than Dr.Jones believes.
D)Dr.Smith believes that the universe is younger than Dr.Jones believes.
E)Dr.Smith believes that the universe will someday stop expanding,while Dr.Jones believes it will expand forever.

Question

Quizplus · Accepted Answer

The Hubble constant (H₀) is a measure of the rate of expansion of the universe. A higher value of H₀ (70 km/s/Mpc) implies a faster expansion rate, which suggests that the universe reached its current size more quickly. Therefore, Dr. Smith, who believes in a higher H₀, would logically believe that the universe is younger than Dr. Jones, who believes in a lower H₀ (50 km/s/Mpc).

DrSmith Believes That the Hubble Constant Is H₀ = 70