According to the Hubble law, a galaxy that is four times as far from Earth will be moving away approximately _____.
A. a quarter as fast
B. twice as fast
C. four times as fast
D. at the same speed

According to the Hubble law, a galaxy that is four times as far from Earth will be moving away approximately _____.
A. a quarter as fast
B. twice as fast
C. four times as fast
D. at the same speed

According to the Hubble law, a galaxy that is four times as far from Earth will be moving away approximately four times as fast.

According to the Hubble law, a galaxy that is four times as far from Earth will be moving away approximately _____. A. a quarter as fast B. twice as fast C. four times as fast D. at the same speed

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