Question

which observation would best support hubbles law in modern astronomy? a the milky ways location remains central to all expanding galaxies. b farther galaxies show greater redshifts, implying faster recession speeds. c light from distant galaxies appears blue - shifted. d most galaxies show no change in velocity over time.

Explanation:

Hubble's Law states that the velocity at which a galaxy is moving away from us (recession speed) is proportional to its distance from us. Red - shift is an indicator of a galaxy moving away, and greater red - shifts mean faster recession speeds for more distant galaxies. Option A is incorrect as the universe has no center. Option C is wrong because blue - shift indicates a galaxy moving towards us, contrary to Hubble's Law. Option D is incorrect as Hubble's Law shows that galaxies are moving away from us with different speeds related to their distance.

Answer:

B. Farther galaxies show greater redshifts, implying faster recession speeds.