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Classic hard science fiction from a master. The generation ship Peerless is running out of space, and fuel - and prospects for survival ...

After generations of travel, the spaceship Peerless may finally have achieved its goal - but the decision to return home may create more tensions than ever before.

As the threat of imminent annihilation hangs over the world, so Yalda sets off on a historic rescue mission - one that will take millennia ...