Brian W. Aldiss 
Helliconia Summer [EPUB ebook] 

The Grand Master of Science Fiction’s “monumental” epic continues as Helliconia nears its larger star—and a strange visitor joins its civilization (The Times, London). A handful of centuries on, Helliconia is close to the larger star in its binary system, and the Phagors have been driven into exile, but conflicting religions and hostility to science keep human civilization fragmented and constantly fighting wars over petty power and fertile land as a plague devastates populations. However, everything changes when a secret visitor from the observer satellite from Earth accepts a slow death in order to visit the planet and spend his time in the sunlight and open air.   More than thirty years after the original publication of Helliconia Spring, the first volume of the Helliconia Trilogy, the series is newly available, now with a map, an afterword, and an introduction by the author.