Orthogonal Books in Order
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The Orthogonal series by Greg Egan is a hard science-fiction trilogy set in an alien universe with altered physical laws. It follows the generation ship Peerless as it faces existential challenges, including resource scarcity and societal tensions, while its crew explores scientific and philosophical transformations. The series examines the implications of a universe where physics differs from Earth's, focusing on the development of new technologies and the reevaluation of social structures.
Publication order
In the order the books were originally released.
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Buy on Amazon2011 · Greg Egan
The Clockwork Rocket is a 2011 novel by Greg Egan, the first book of the Orthogonal trilogy. A series of strange meteors enters a planetary system,…
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Buy on Amazon2012 · Greg Egan
In an alien universe, the generation ship Peerless was sent to save its home world from destruction. However, the ship lacks fuel to return home and…
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Buy on Amazon2013 · Greg Egan
The Arrows of Time is a hard science-fiction novel by Australian author Greg Egan, the third book in the Orthogonal trilogy. Published by Gollancz on…
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Frequently asked questions
What order should I read the Orthogonal books in?
Read them in publication order, starting with “The Clockwork Rocket”. Start with “The Clockwork Rocket.”
How many books are in the Orthogonal series?
We list 3 books by Greg Egan , published between 2011–2013.
Where can I buy the Orthogonal books?
Each title above links to Amazon. See our affiliate disclosure.
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Reading order compiled from author/publisher guidance and verified bibliographic data. Spotted a wrong order, a missing book, or any other mistake? and we'll correct it.