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On his summer vacation, Galileo Galilei hears about the newly invented telescope and decides to build one of his own. Turning his new "spyglass" to the night sky, he sees things that no one has ever seen before. He discovers that the Milky Way is made of stars, and that the moon has mountains. He also notices a strange formation of "stars" that will eventually turn people's understanding of the world upside down. Fictional journal accounts capture the famous Italian scientist's curiosity and wonder as he makes some of the most amazing discoveries in history.
Galileo is known today for his studies of the stars and the solar system, but his use of scientific methods to conduct his studies and experiments was as revolutionary as his discoveries. Jeanne Pettenati has created a journal that Galileo might have written during one brief year when he used trial and error to create a telescope—or spyglass as he called it—and then asked questions about what he saw when he looked at Jupiter with his spyglass.
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