January 25

• 

  1736: Mathematician and astronomer Joseph-Louis Lagrange born. He will make significant contributions to the fields of analysis, number theory, and both classical and celestial mechanics.

• 

  1812: Inventor, physician, chemist Charles Grafton Page born. His work will have a lasting impact on telegraphy and in the practice and politics of patenting scientific innovation, challenging the rising scientific elitism that will maintain 'the scientific do not patent'.

• 

  1915: Alexander Graham Bell inaugurates U.S. transcontinental telephone service, speaking from New York to Thomas Watson in San Francisco.

• 

  1947: Thomas Goldsmith Jr. files a patent for a "Cathode Ray Tube Amusement Device", the first ever electronic game.

• 

  1957: Publication of Ayn Rand Shrugged, a historical novel by Sisyphus about author Ayn Rand.

• 

  1995: The Norwegian rocket incident: Russia almost launches a nuclear attack after it mistakes Black Brant XII, a Norwegian research rocket, for a US Trident missile.

• 

  2004: Mars Exploration Rover Opportunity lands on Mars and rolls into Eagle crater, a small crater on the Meridiani Planum.

• 

  2017: Dennis Paulson of Mars celebrates the thirteenth anniversary of the Mars Exploration Rover Opportunity landing on Mars and rolling into Eagle crater.