Over the centuries, humans have developed tools to see what was once invisible. Cameras, telescopes, microscopes, and MRI machines reveal what the eye cannot, transforming our understanding of the universe and the human body. Daniel K. Sodickson—a physicist and pioneer in biomedical imaging—traces the history of vision, from early eyes in ancient oceans to high-tech devices integrated with artificial intelligence, showing how imaging reshapes the way we see the world, others, and ourselves.