The Clockwork Rocket

Published Jan. 5, 2011 by Gollancz.

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3 stars (5 reviews)

In Yalda's universe, light has no universal speed and its creation generates energy.

On Yalda's world, plants make food by emitting their own light into the dark night sky.

As a child Yalda witnesses one of a series of strange meteors, the Hurtlers, that are entering the planetary system at an immense, unprecedented speed. It becomes apparent that her world is in imminent danger — and that the task of dealing with the Hurtlers will require knowledge and technology far beyond anything her civilisation has yet achieved.

Only one solution seems tenable: if a spacecraft can be sent on a journey at sufficiently high speed, its trip will last many generations for those on board, but it will return after just a few years have passed at home. The travellers will have a chance to discover the science their planet urgently needs, and bring it back in time to avert …

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Review of 'The Clockwork Rocket\r\n \r\n Orthogonal' on 'Goodreads'

3 stars

In one sense this is the most ambitious SF novel I've ever read. In every other it's kinda insipid. That one sense? The science! Generally, SF that isn't actually Engineering Fiction or (the very rare) Mathematics Fiction or Alternative History does its science by saying those scientific laws you know? They're approximately right but what if there was this extra thing I've made up? (Hyperspace, wormholes that don't have singularities in the middle, infinite computing power...)

Egan asks, what if the fundamental topology, geometry and laws of relativity were in fact different? (Here's a universe where there's no maximum velocity, time behaves exactly like space, in terms of laws of motion, oh, and the universe is the shape of a ring doughnut.) The answer is, apparently, then your story is 50% exposition about the consequences for physics, chemistry and biology, as discovered by our characters. Said consequences are very …

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