Beyond the familiar planets of the solar system lies a mysterious frontier-an icy realm filled with frozen worlds, strange orbits, and secrets waiting to be uncovered. This book takes young explorers on an exciting journey past Neptune, where dwarf planets, comets, and hidden cosmic wonders drift in the cold darkness of space. With engaging storytelling and fascinating facts, this adventure into the unknown reveals how scientists discovered Pluto's neighborhood, why some planets were reclassified, and whether a hidden giant world might still be lurking beyond the Kuiper Belt. Readers will dive into the science behind space telescopes, learn how astronomers search for new planets, and discover why some comets come crashing toward the Sun from the farthest reaches of the solar system. Packed with real discoveries and future space missions, this book is perfect for curious minds eager to explore what lies beyond the planets they already know. From the search for Planet Nine to the distant Oort Cloud, this deep-space expedition will spark wonder, excitement, and a whole new way of looking at the outer edges of the solar system. The universe is vast, and there's still so much to uncover-this is just the beginning.