About the Book: Existential Physics by Sabine Hossenfelder explores the biggest questions about reality, the universe, and human existence through the lens of modern physics. Drawing on discoveries in quantum mechanics, black holes, particle physics, and cosmology, this engaging book examines free will, consciousness, the origins of the universe, simulation theory, and the nature of reality. Combining scientific insight with philosophical curiosity, Hossenfelder explains complex ideas in an accessible and thought-provoking way. Perfect for readers interested in science, physics, and the mysteries of existence, this groundbreaking bestseller reveals what modern science can—and cannot—tell us about the world we live in.