If a galaxy is located at a distance of 18 Mpc and is found to have recessional velocity of 1170 km/s, what is Hubble's constant based only on this galaxy

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Quizplus · Accepted Answer

Hubble's constant is given by the ratio of the recessional velocity to the distance. In this case, the recessional velocity is 1170 km/s and the distance is 18 Mpc. Therefore, Hubble's constant is 1170 km/s / 18 Mpc = 65 km/s/Mpc.

If a Galaxy Is Located at a Distance of 18