The moon is the nearest celestial body to the earth, but how to fly from the earth to the moon is not a simple problem, although the Apollo astronauts landed on the moon more than 30 years ago, but today man can not simply repeat the way of Apollo landing on the moon. Because today's return to the moon is more complex and difficult than that of Apollo, not only the number of people flying to the moon is much more than that of Apollo, but also not simply exploring and exploring when people arrive on the moon, but to build a base on the moon, to carry out comprehensive development and utilization of the moon, and to work and live on the moon for a long time.
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It will take time for man to develop and utilize the moon.