The Substrate

Book 2 of 2: The Aphelion Sequence

Aris Thorne

ISBN 13: 9798196630934

Published by Independently Published, 2026

Language: English

Condition: New Soft cover

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Bibliographic Details

Title: The Substrate
Publisher: Independently Published
Publication Date: 2026
Language: English
ISBN 13: 9798196630934
Binding: PAP
Condition: New
Weight: 263 grams

About this title

Synopsis

THE SUBSTRATE
Book Two of The Aphelion Sequence

Threshold-1 was supposed to be the end of the journey.

A habitable world.
A permanent colony.
A future finally stable enough to build on.

Then geologist Mira Castellan discovers the substrate buried beneath the planet’s surface.

Rare-earth concentrations powerful enough to build six generation ships.
Enough to launch twelve new colonies across twelve star systems.

Enough to ensure humanity never depends on a single world again.

There’s only one problem:

Mining it will destroy the planet.

Now the colony faces an impossible decision:

Preserve Threshold-1 as humanity’s permanent home…
or sacrifice it for the chance to expand beyond it.

As rumors spread through the settlement, political factions emerge, relationships fracture, and every report Mira writes begins shaping the future before a single vote is cast.

Because information is never neutral.

And once people know what’s buried beneath them, there may be no way to stop what comes next.

The Substrate is a restrained, intelligent science-fiction novella about survival, responsibility, and the cost of turning a world into a resource.

Perfect for readers of:

Becky Chambers
Adrian Tchaikovsky
Kim Stanley Robinson
Martha Wells
Ann Leckie

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