Name three famous figures who were contemporaries of Galileo Galilei.
Three famous figures who were contemporaries of Galileo Galilei are Johannes Kepler, Leonhard Euler, and Isaac Newton.
Some of Galileo Galilei's famous contemporary figures include Johannes Kepler, who formulated the laws of planetary motion; Antonio Meucci, who invented the telephone; and Leonhard Euler, who made important contributions to calculus and graph theory.