americansciencefiction award:hugo_award=1987 award:hugo_award=novel award:nebula_award=novel comics compréhension ender(fictitiouscharacter) epic extraterrestrialbeings fantasy fiction graphicnovels guerrespatiale hardsciencefiction hugoawardwinner hélicoptères interplanetaryvoyages jupiter juvenilefiction lecture livresdetransition lusitania(imaginaryplace) newyorktimesbestseller nouvelles nyt:mass-market-paperback=2013-11-24 planètes problèmesetexercices readinglevel-grade10 readinglevel-grade11 readinglevel-grade12 readinglevel-grade8 readinglevel-grade9 roman romans rêves science-fiction sciencefiction spacewarfare wiggin