ocr: 22 - a - - Exploration and Discovery The themes of individual quest, high risk, and great discovery run through tales of exploration- whether on the high seas, across frozen tundras, or in deep space. What Vasco da Gama, Robert Peary, and the astronauts ofApollo 11 had in common was a little luck and a lot of nerve. Other voyagers, no less skilled and no less daring, met with tragedy. Background
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