Jules Verne 
Off on a Comet [PDF ebook] 
Or, Hector Servadac

Although science fiction is often regarded as a twentieth-century phenomenon, early masters such as Jules Verne were mining the outer reaches of space for their stories for nearly a century before the 1950s SF boom took hold. In Off on a Comet, Verne follows the imaginary exploits of a ragtag group of Earthlings who are forced to take a two-year journey through space on a gigantic comet.