Mars

 2017-07-12 04:08:27  35  1  0

說明

Mars is a planet. It is the fourth planet from the sun. It is the next planet beyond Earth. Mars is more than 142 million miles from the sun. The planet is about one-sixth the size of Earth. Mars is known as the Red Planet. It gets its red color from the iron in its soil. What does this mysterious planet mean to us is an interesting topic to study.

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