| Summary/Abstract |
The world has known three great ages of exploration-the circumnavigation of the globe, with its attendant discovery of new lands; the traversing and cataloguing of the newly-found continents; and the exploration of the uninhabited regions of Antarctica, the deep ocean basins and outer space. The author points to the culturally and historically determined nature of discovery, which has thus far been largely a Western phenomenon, but emphasizes the qualitatively different character of space which takes the Earth, rather than any particular part of it, as its starting point, and which sets forth to chart regions that are most probably abiotic.
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