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Explorers Through History | by Image Editor
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Explorers Through History

Who can forget past explorers such as Marco Polo, Christopher Columbus, Captain James Cook, Sir Edmund Percival Hillary, and Neil Alden Armstrong. Today many of our explorers are not humans but machines we have created to act as our surrogates. In our past exploration of space the Galileo, Viking, and Pioneer missions gathered information for us. Today other missions such as the Mars Exploration Rovers, Spirit and Opportunity, continue our exploration of space.



Part of article "What is Science?," on

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Taken on August 16, 2008