The Dark Side of the Sun

The Dark Side of the Sun is a science fiction novel by Terry Pratchett, first published in 1976. It is similar to the work of Isaac Asimov. According to Don D'Ammassa, both this and Pratchett's 1981 sci-fi novel Strata spoof parts of Larry Niven's Ringworld. The holiday of Hogswatch, which appears in the Discworld books, is celebrated by the characters in The Dark Side of the Sun. Overview The story is set in a portion of the galaxy populated by fifty-two different sentient species. All of these species, humanity among them, have evolved in the last five million years, and all of them have evolved in a spherical volume of space less than two hundred light-years across centred on Wolf 429. The rest of the galaxy is sterile as far as anybody can tell. Scattered irregularly across this "life-bubble" are ancient artefacts of a mysterious race called the Jokers, who apparently became extinct long before any of the current races arose. These artefacts are usually astounding feats of engineering (such as a pair of stars shaped into rings and joined like links in a chain), but leave no hints about the Jokers' physical form or day-to-day life. The only piece of translatable Joker text is a poem, which cryptically states that they have gone to their new home, which "lies at the dark side of the sun".