Tau zéro (ROMAN)

L’aventure ultime : le premier vol habité hors système solaire... Terre. XXIIIe siècle. Ils sont cinquante. Vingt-cinq femmes, vingt-cinq hommes. Parmi les meilleurs dans leurs domaines : astrophysiciens, mathématiciens, biologistes, astronavigateurs... Leur mission est la plus sidérante qui soit : rejoindre l’étoile Beta Virginis en quête d’une nouvelle Terre. Ils disposent pour ce faire du plus stupéfiant des vaisseaux, le Leonora Christina, dernier né de sa génération, un navire capable de puiser son énergie au cœur même de l’espace et d’évoluer à des vitesses relativistes... Un voyage de trente-deux années-lumière. Un voyage sans retour. Et tous le savent. Tel est le prix que sont prêts à payer ces pionniers d’une aire nouvelle... Considéré par David Pringle comme l'un des cent livres de SF les plus importants jamais écrits, par James Blish comme le récit de science-fiction « ultime », Tau Zéro est une référence incontestée de la hard SF moderne. Mais c’est aussi, surtout, un roman du « sense of wonder », un récit vertigineux. Quarante ans après sa parution outre-Atlantique, voici enfin la traduction de ce chef-d’œuvre incontesté, une édition orchestrée par Jean-Daniel Brèque, qui en assure la traduction et la présentation, illustrée en postface par l'astrophysicien Roland Lehoucq. Poul Anderson (1926-2001) est un des monstres sacrés de la SF américaine. Sept fois lauréat du prix Hugo, il est l'auteur de certains des plus grands monuments du genre, dont le cycle de La Patrouille du temps . Poul Anderson's Tau Zero is an outstanding work of science fiction, in part because it combines two qualities that are often at odds in this genre: an interest in the emotional lives of its characters and a fascination with all things technological and scientific. In Tau Zero these components are not merely fused; they work together with a remarkable synergy that makes the novel much more than just a deep space adventure story.The novel centers on a ten-year interstellar voyage aboard the spaceship Leonora Christine, and it opens with members of the crew preparing for their departure from earth. It is an especially moving departure because they know that while they are aboard the ship and traveling close to the speed of light, time will be passing much more quickly back home. As a result, by the time they return everyone they know will have long since died. From practically the very first page, therefore, Tau Zero sets the scientific realities of space travel in dramatic tension with the no-less-real emotional and psychological states of the travelers. This is a dynamic Anderson explores with great success over the course of the novel as fifty crewmembers settle in for the long journey together. They are a highly-trained team of scientists and researchers, but they are also a community of individuals, each trying to make a life for him or herself in space.This is the background within which the action of the novel takes place. Anderson carefully depicts the network of relationships linking these people before the real plot begins to unfold. The voyage soon takes a unexpected and disastrous turn for the worse. The ship passes through a small, uncharted, cloudlike nebula that makes it impossible for the crew to decelerate the ship. The only hope, in fact, is for the ship to speed up. But acceleration towards the speed of light means that time outside the spaceship passes even more quickly, and the crew finds itself hurtling deeper into space and further into the future. Anderson's experience as a physicist is evidenced in the knowledgeable way he discusses the technical details of space and time travel, although his explanations never become burdensome or tedious. More to the point, the painstaking care with which he has drawn the characters ensures that the action is both imaginatively compelling and emotionally meaningful. It is a combination that is unfortunately all too rare in science fiction.