20th January

On this day in 1633, Galileo, at age 68, left his home in Florence, Italy, to face the Inquisition in Rome. By 22 Jun 1633, he buckled under the threats and interrogation by the Inquisition, and renounced his belief that the Earth revolved around the Sun.

The postage stamp of one of today's mathematicians at THIS LINK was issued in 1936.