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  Captain James Cook crossed the Antarctic circle.
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  Captain Thaddeus bellingshausen first one to cross the circle since captain cook
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  landing on the continental Antarctica by john davis
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  Whaler James Weddell discovers the sea named after him.
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  James clark ross takes two ships
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  Adrien de Gerlache and the crew of the Belgica got trapped in a pack of ice in Antarctica.
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  Captain Scott lead his crew on the exhibition to the South Pole.
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  Douglas mawson reaches the south pole
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  James clark ross takes two ships
lead a five exhibition