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Given That the Universe Is About 14 Billion Years Old,which

Question 45

Multiple Choice

Given that the universe is about 14 billion years old,which of the following statements is logically valid?


A) All galaxies nearby us are about 14 billion years old.
B) All galaxies that we can see are about 14 billion years old.
C) All galaxies that we see have an age that is approximately equal to the age of the universe today,minus the lookback time (or light travel time) corresponding to the redshift of that galaxy.
D) The oldest galaxies we see at great distances are younger than the oldest galaxies we see nearby.

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