Come with me as we explore a black hole's interior. Allow us to slide past its edge, the horizon, and continue to fall through this fissure in the cosmos. As we dive in, geometry will fold before our eyes and the equations will tighten around us. We will eventually pass it: the deep, dense remnants of a star that is descending even farther. The bottom followed. Where space and time collide and the white hole is created... Here, Carlo Rovelli describes, with lightness and enchantment, the continuing journey of his own cutting-edge research, the joy and uncertainty of venturing where we haven't gone before. He invites us to go beyond, to feel the fever and the unease of science, leading us to the brink of theory and experiment. This is a glimpse into the amazing life of a white hole.