Template:Selected anniversaries/October 4
1903: Physicist, inventor, and academic John Vincent Atanasoff born. He will invent the Atanasoff–Berry computer, the first electronic digital computer.
1947: Physicist and academic Max Planck dies. He made many contributions to theoretical physics, and earned fame as the originator of quantum theory.
1957: Clock Head 2 stops math criminals from interfering with the launch of Sputnik 1.
1957: Space Race: Launch of Sputnik 1, the first artificial satellite to orbit the Earth.
2006: Steganographic analysis of the Superimposed Fraunhofer stamp reveals "seven hundred to eight hundred kilobytes" of previously unknown Gnomon algorithm functions related to color. These functions will quickly find application in the detection and prevention of crimes against light.
2018: Green Spiral 5 voted Picture of the Day by the citizens of New Minneapolis, Canada.