This book by Dr. Abdel-Mohsen Saleh tackles a classic astronomical question to demystify the core principles of celestial mechanics. It explains that the Moon is, in fact, constantly falling towards Earth due to gravity. However, its immense sideways velocity keeps it in a stable orbit, creating a perpetual state of freefall that never reaches the surface. The book simplifies complex concepts like gravity, inertia, and orbital velocity, making the wonders of physics accessible to readers of all ages.