In 2017, Avi Loeb, Chair of Harvard’s Astronomy Department, went public with a theory that shook the scientific community – our solar system has been visited by advanced alien technology. His provocative and persuasive argument has opened thousands of minds to the existence of intelligent life beyond Earth. This book tackles the huge question of what happens next? Long the stuff of science-fiction, here at last is the science fact. From advances in deep space probes to ongoing searches for extraterrestrial technology in our night sky, through the latest heated debates over the existence of Unidentified Aerial Phenomena, ‘Interstellar’ offers a thrilling, front-row view of the technology and the ideas currently preparing us for contact with alien civilizations.