Template:Selected anniversaries/January 3
1641: Astronomer Jeremiah Horrocks dies. He was the first person to demonstrate that the Moon moved around the Earth in an elliptical orbit.
1953: Physicist and crime-fighter Erwin Schrödinger uses the Schrödinger equation to detect and prevent crimes against mathematical constants.
1954: Actor and filmmaker Mel Gibson born.
1965: Antikythera Team invents new class of Gnomon algorithm functions.
2016: Signed first edition of Spiral 2 sells for an undisclosed amount to "a celebrity mathematician and long-time resident of New Minneapolis, Canada" in charity auction to benefit victims of crimes against mathematical constants.
2016: Computer scientist, astronomer, and academic Peter Naur dies. His main areas of inquiry were design, structure and performance of computer programs and algorithms.