Told from third person point of view and dating back to his birth, Sís walks the reader through the events that shape the life of the recognized scientist, mathematician, philosopher, and physicist, Galileo Galilei.

The book opens with a prelude, with careful illustrations, Peter Sís sets the stage for the story by laying the groundwork of what the world was like during Galileo's era; scientifically, and religiously.

From being celebrated for his other astronomical discoveries to the controversial Copernican theory, Peter Sís documents these events with intricate illustrations that vividly resemble Galileo's own, adding depth to the story.

The book ends on a positive note when Sís writes about the Pardon that was issued to Galileo more than three hundred years later in October 1992.

She also writes, "in creating this original and exquisite book, affirms the power of one individual to change our ideas about the universe we live in."