Taking the Hubble constant equal to 75 km / (s • Mpc), determine the distance to the galaxy if the redshift in its spectrum corresponds to a speed of 975 km / s.
The distance to the galaxy is found using the Hubble law: v = H • D, where D is the distance to the galaxy, H is the Hubble constant, v is the redshift speed.
Then D = v / H, D = 13 Mpc.
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