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  Captain James Cook was the first to cross the Antarctic circle
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  James Wedell sailed with another company aboard their boat Jane they reached to Ross ice shelf.
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  Hugh and three other people slegded onto Ross ice shelf
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  Shackleton and his crew sailed from England to Antarctica,just before worl war 1 started
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  The Endurance leaves the icy island, South georgia, and reaches the Antarctica Penninsula
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  Captain Cook's ship sinks
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  Shackleton died in South Georgia Island,at the age of 47, going back to Antarctica