Context of Analogy

Most people have probably heard that the universe is expanding. Certainly New Scientist readers have, because I keep writing about it in this column. It is perhaps easy to accept the statement that the universe is expanding without thinking too deeply about it. It is just some weird physics indicating that, as time goes on, galaxies get further away from each other. Or may be you have heard the old race car analogy, that galaxies moving apart are like two cars racing away from each other.
–New Scientist

Which of the following BEST interprets the meaning of “analogy” in the passage?

Related Topic

–How fast is the universe expanding | Video by Science Magazine

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