This thorough and engaging biography of Galileo presents the story of a man with insatiable curiosity whose observations, experiments, and discoveries transformed several scientific fields. Written for middle grade and above, this work provides details about Galileo’s youth and education, as well as his many and varied experiments. The courageous challenges to a geocentric model of the universe landed Galileo in a position of great persecution and judgement, but they brought scientific understanding closer to the truth. By presenting the scientific details in an engaging narrative, this work makes the groundbreaking work of Galileo accessible and intriguing to young learners.