Mariner IX took two photos of Mars’ north pole.
Source
The six billionth living human being was born.
The USS Holland (SS-1) became the first modern submarine commissioned for the United States Navy.
The USSR's Voskhod 1 spacecraft became the first spaceflight with multiple crew members.
Organized by the Columbian Order, the first recorded 'Columbus Day' was celebrated on this day.
Christopher Columbus claimed he first saw land at present-day Bahamas.
