◆ On this day

December 14

4 sourced moments from December 14 in history: Alabama Became the 22nd U.S. State (1819); Max Planck launched quantum theory on December 14, 1900; Roald Amundsen's team became the first to reach the South Pole (1911), plus 1 more.

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4 things happened on December 14

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1972 Space · Space Exploration

Eugene Cernan is still the last person to walk on the Moon

Apollo 17's commander left the Moon on December 14, 1972, expecting others to follow soon. More than half a century later, nobody has.

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1911 Geography · Landmarks & Wonders

Roald Amundsen's team became the first to reach the South Pole

On December 14, 1911, five Norwegians on skis and dog sleds beat a doomed British rival to the bottom of the Earth by a month.

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1900 Science · Physics

Max Planck launched quantum theory on December 14, 1900

On 14 December 1900 Max Planck told Berlin's physicists that energy comes in packets. He saw it as a desperate trick; today it defines the kilogram.

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1819 Geography · Countries

Alabama Became the 22nd U.S. State

On a December day in 1819, a presidential signature turned a frontier territory into America's newest star on the flag.

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