The generation starship is a classic concept in science fiction. Other stars are hugely far away, and our spacecraft are slow - why not condemn several generations of our descendants to live on board ship, in the hope of reaching a new world in hundreds of years' time? What could possibly go wrong?

Brian Aldiss, who became a major figure in British SF, made his novel debut with a unique exploration of this theme. Non-Stop, published in 1958, is a generation ship classic and also a superb example of how writers can deploy a chain of conceptual breakthroughs, transforming their characters' view of the world.

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