Why isn't the space within our solar system or the Milky Way expanding according to Hubble's Law?
A) The universe is not old enough for the solar system or Milky Way to have begun their expansion.
B) Hubble's law of expansion applies only to the space between galaxies.
C) As we are inside our solar system and the Milky Way, we cannot observe their expansion.
D) The gravity exerted by the solar system and the Milky Way is strong enough to hold them together against the expansion of the universe.
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