There are two important reasons to explore the Moon. The first reason is to know more about the Moon itself; its origin, history, composition, and geologic diversity. The second reason is to apply that knowledge to a useful purpose - the future colonization of the Moon. Exploration will be a significant effort. It will require the services of engineers, scientists and robotic devices working for decades to survey and analyze the major areas of interest on the Moon. The global geologic exploration of the Moon (or of any other planetary body) may be divided into reconnaissance
(performed by global remote sensing) and field work, which is the detailed analysis of specific surface and subsurface regions of the Moon. The scientific objective is to understand the processes that produced the observed geologic features.
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