Through a voyage framing device in which a parent guides a child, the work introduces foundational astronomy for young readers by teaching observational methods and simple explanations of celestial phenomena. It covers the apparent daily motion of the sky, ways to identify prominent stars and constellations, the relationship between the Sun and the stars, and basic measures and instruments, while offering practical exercises and clear diagrams. Instruction is informal and didactic, combining hands-on sky-watching, step-by-step demonstrations, and moral encouragement to cultivate the habit of careful observation and scientific curiosity.