Does Hubble's law work well for galaxies in the Local Group? Why or why not?
A)No,because Hubble did not know the Local Group existed when he discovered his law.
B)No,because galaxies in the Local Group are gravitationally bound together.
C)No,because we do not know the precise value of Hubble's constant.
D)Yes,it works so well that we have never detected any measurable deviations from its predictions.

Question

Quizplus · Accepted Answer

Galaxies in the Local Group are gravitationally bound together, which means they do not obey Hubble's law. This is because Hubble's law only applies to galaxies moving away from us due to the expansion of the universe, and the motion of galaxies in the Local Group is mostly due to their mutual gravitational attraction.

Does Hubble's Law Work Well for Galaxies in the Local