Whether on Venus, the interstellar object ‘Oumuamua, or a distant exoplanet, the question of extraterrestrial life has fascinated humanity for centuries. Beyond fantasies or fiction, scientists are conducting exciting research on the possibility of life elsewhere in the universe: where could it have already arisen or where might it arise in the future? In this richly illustrated book, two astrophysicists invite readers on this incredible quest through time and space.