This Day In History : July 11

1935 United States

Mathematical calculations suggest that it was on this day that Pluto moved from the ninth to the eighth most distant 'planet' from the Sun for the last time before 1979

On July 11, 1935, Pluto moved from the ninth to the eighth most distant 'planet' from the Sun for the last time before 1979, according to mathematical calculations. This change in position was due to the eccentric orbit of Pluto, which varies its distance from the Sun over time.

Also on This Day in History July 11

Discover what happened on July 11 with HISTORY's summaries of major events, anniversaries,
famous births and notable deaths.

Births on This Day, July 11
  • 1927 Theodore Maiman

    American physicist who built the first working laser

  • 1872 Rollin Henry White

    American inventor of steam boilers for early automobiles and Cletrac tractors

  • 1857 Sir Joseph Larmor

    Irish physicist, the first to calculate the rate at which energy is radiated by an accelerated electron, and the first to explain the splitting of spectrum lines by a magnetic field

  • 1838 John Wanamaker

    American businessman who founded a department store and adopted new technology in his buildings for publicity

  • 1902 Samuel Abraham Gouldsmit

    Dutch-American physicist (formulated concept of electron spin)

Deaths on This Day, July 11
  • 1806 James Smith

    Irish-American lawyer and politician who was a signer of the U.S. Declaration of Independence as a representative of Pennsylvania

  • 1817 William Gregor

    English clergyman, mineralogist and chemist who discovered the element titanium

  • 1909 Simon Newcomb

    Canadian-American scientist, mathematician and astronomer (calculated extremely accurate tables for the solar system)

  • 1941 Sir Arthur Evans

    British archaeologist who first visited Crete in 1894 to study and decipher an unknown script seen on seal stones

  • 1971 Frank Rosenblatt

    American psychologist (Perceptron)


The USS Nevada is launched

The USS Nevada, a Nevada-class battleship of the United States Navy, was launched on July 11, 1914, at the Fore River Shipyard in Quincy, Massachusetts. It was sponsored by Miss Eleanor Anne Seibert, the daughter of Nevada Governor Tasker Oddie.

Tijuana, Mexico founded

Tijuana, Mexico, was founded in 1889. Initially, it was a small settlement, but it later grew into a significant border city due to its strategic location along the U.S.-Mexico border. Tijuana became known for its bustling commercial activity, entertainment industry, and tourism, attracting visitors from both sides of the border.

The U.S. Marine Corps is re-established after they had been disbanded after the American Revolutionary War

The United States Marine Corps was re-established on July 11, 1798, by an act of Congress. This occurred after the Marine Corps had been disbanded following the American Revolutionary War. The re-establishment of the Marine Corps was prompted by the need for naval protection amid rising tensions with France during the Quasi-War. Since then, the Marine Corps has played a crucial role in defending the nation's interests at home and abroad.

French astronomer Jean-Louis Pons discovers his 1st comet

French astronomer Jean-Louis Pons discovered his first comet on July 11, 1801. This comet, designated C/1801 N1 (Pons), was the first of many comets discovered by Pons during his career. Pons became renowned for his comet discoveries and made significant contributions to the study of these celestial objects.
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