<Tr> <Th> Countries </Th> <Td> 0 </Td> </Tr> <Tr> <Th> Internet TLD </Th> <Td>. aq </Td> </Tr> <Tr> <Th> Largest cities </Th> <Td> Research stations in Antarctica </Td> </Tr> <P> Antarctica (UK English / ænˈtɑːktɪkə / or / ænˈtɑːtɪkə /, US English / æntˈɑːrktɪkə / (listen)) is Earth's southernmost continent . It contains the geographic South Pole and is situated in the Antarctic region of the Southern Hemisphere, almost entirely south of the Antarctic Circle, and is surrounded by the Southern Ocean . At 14,000,000 square kilometres (5,400,000 square miles), it is the fifth - largest continent . For comparison, Antarctica is nearly twice the size of Australia . About 98% of Antarctica is covered by ice that averages 1.9 km (1.2 mi; 6,200 ft) in thickness, which extends to all but the northernmost reaches of the Antarctic Peninsula . </P>

What parts of south america are part of antarctica