CERN is familiar to us as the largest physics laboratory in the world, responsible for many world-first scientific discoveries. Growing alongside this immense human endeavour, an extraordinary arts programme has developed that explores the captivating beauty of particle physics. In the Spaces Between is a multifaceted journey through this unique fusion of art and science. Edited by Mónica Bello, former curator and head of Arts at CERN, this volume reflects on the history of a programme that has brought together the perspectives of artists and scientists to explore how the fundamental elements of matter and energy interplay between observation, imagination, and experimentation. From quantum fields and dark matter to the philosophical dimensions of physics, we delve into the profound and speculative realms inspired by CERN. This book is a thoughtful celebration on how creativity and curiosity ignite when diverse minds engage with the still-unknown fields of research, nature and reality.