Template:Selected anniversaries/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.