| 1901-1904 | English Naval officer Robert Falcon Scott leads the Discovery expedition to Victoria Land. Among the expedition members is Ernest Shackleton, and an attempt is made to reach the South Pole. However the group is forced to abandon the attempt at 82 degrees south latitude. |
| 1901-1903 | The Swedish expedition led by Otto Nordenskjöld to the Weddel Sea and the area around the Antarctic peninsula is carried out. Two wintera are spent at the Snow Hill base station. The expedition ship, the Antarctic which is meant to bring new supplies for the members gets stuck in the pack ice and sinks, resulting in the expedition members being divided into two groups. They are reunited through a series of fortunate circumstances, and in the autumn of 1903 manage to return to Sweden via Argentina, with ample scientific results. |
| 1903 | Frenchman Jean-Baptiste Charcot leads an expedition to the area around the Antarctic peninsula, performing significant survey work. |
| 1907 | Ernest Shackleton leads the Nimrod expedition. Among other things it attempts to reach the South Pole, but fails. |
| 1911 | Norwegian Roald Amundsen reaches the South Pole on December 14th. He attains this goal in competition with Robert F. Scott and a month later, Scott arrives at the South Pole, finding himself defeated. On the way back, Scott faces many difficult obstacles including exhaustion and harsh weather, and all members of Scott's group perish. |
| 1914-1916 | Ernest Shackleton's great Transantarctic expedition aboard the Endurance sets off. Already in January 1915, the Endurance gets stuck in the ice on the Weddel Sea, and sinks later in the same year. The crew is forced to tow the lifeboats across the ice, and in April 1916 they reach the desolate Elephant Island. From here, Shackleton and five men set out in one of the lifeboats across the stormy sea toward South Georgia to reach civilization. They eventually reach South Georgia, and in time manage to rescue the men remaining on Elephant Island. |
| 1929 | American Richard E. Byrd sets out from his base Little America with a Ford Trimotor plane and makes a nonstop flight to the South Pole. |
| 1932-1933 | The Second International Polar Year. |
| 1935 | First transcontinental flight over the Antarctic, by American Lincoln Ellsworth. |
| 1949-1952 | Norwegian-British-Swedish Antarctic expedition carried out, yielding rich scientific results. |