What Does Hubble's Law Tell Us

question 12

Multiple Choice

What does Hubble's law tell us?

• A)The faster a spiral galaxy's rotation speed,the more luminous it is.
• B)The longer the period of a Cepheid variable,the greater its luminosity.
• C)For every force,there is an equal and opposite reaction force.
• D)The more distant a galaxy,the faster it is moving away from us.

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