A. the closer galaxy has recession speed equal, Ask an Expert

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Two galaxies have distances from Earth of 123 Mpc and 456 Mpc, respectively. Imagine you do not know the value of the Hubble constant (which for this problem, H_o is NOT 70km/s/Mpc). Explain your reasoning and show all calculations.

A. The closer galaxy has recession speed equal to 9,594 km/s. Calculate the recession speed of the other galaxy.

B. Calculate the value of the Hubble constant for this scenario.

C. If these were real galaxies in our Universe, explain why this value of H_o would or would not surprise you.

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