The space race between the US and Russia ended half a century ago when US astronauts became the first to walk on the moon. Today there’s yet another race, prompted by China’s successful landing on the far side of the moon and involving private companies as well as national space agencies, to put humans back on the lunar surface. But building a moon base and actually living on the moon will require careful planning. First, we need to identify and map available lunar resources, including hydrogen and water ice. Such compounds are crucial if we are to create breathable air…
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