摘要
During the current interglacial period,conditions on Earth,the homeland of humankind,fostered the emergence of large-scale human cooperation,the unique phenomenon that we call civilization.Since then,humans everywhere on Earth,standing under the vast starlit sky,have thought about and explored our
During the current interglacial period, conditions on Earth, thehomeland of humankind, fostered the emergence of large-scalehuman cooperation, the unique phenomenon that we call civiliza-tion. Since then, humans everywhere on Earth, standing under thevast starlit sky, have thought about and explored our planetceaselessly. From civilization’s earliest days, that curiousity has ex-tended to the space that surrounds us. Among the crowningachievements of civilized mankind are the sciences, including sys-tematic studies of Earth and space.
