Angelmass

Angelmass

by Timothy Zahn

4.3 (129)

4.3 stars from 129 reviews

503 pages~8.4 hr readPublished by TorPublished 2001-01-01

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Fans of these authors will like this...

  • Greg Egan
  • Kim Stanley Robinson
  • Alastair Reynolds

Fans of these books will like this...

  • Leviathan Wakes
  • Revelation Space
  • The Three-Body Problem

Perfect for you if...

  • You enjoy hard SF that takes a single speculative concept and explores its real consequences for politics and warfare.
  • You loved Thrawn's strategic cat-and-mouse games and want Zahn's complex plotting in a standalone novel.
  • You're drawn to stories where the protagonist must navigate conflicting loyalties and uncover uncomfortable truths about both sides.

Maybe not for you if...

  • You prefer character-driven narratives over intricate world-building and philosophical questions about free will.
  • You want romance or personal relationships to anchor the plot—this is squarely focused on ideas and espionage.
  • You're looking for something lighter; this is a serious, sometimes bleak examination of power and control.

About this book

Deep in space lies Angelmass, a black hole that emits particles capable of making humans calm, reasonable, and incapable of lying. While Empyrean human colonies at the galaxy's edge benefit from these particles, the Earth-based Pax empire views them as a threat to humanity. Academic Jereko Kosta is recruited by the Pax to spy on the Empyrean and joins a ship hunting the particles. His discoveries prove both scientifically significant and morally troubling. When the Pax initiates an aggressive action that risks war with the Empyrean, Kosta becomes the only person capable of preventing conflict and revealing the true nature of what both sides are fighting over. The novel explores ethical questions through science fiction action and conflict between human powers.

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Price History

Kindle price over time. Green zones = periods when the book was free.

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Free$5.00$9.99May '21Aug '23Jul '24Oct '25
$1.99$9.99

Currently on sale at $1.99 — 80% off peak. Price has dropped 22 times over the last 5 years. Goes on sale roughly every 71 days.

Sales Rank

Amazon sales rank: lower number = better selling book. #1 is the bestseller.

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#5,854#765,294#1,524,733May '18Nov '23Oct '24Jun '26

Currently around #18K in the Kindle store — a steady mid-list seller. Sales have softened 72% recently.

Rating & Reviews

Purple line = star rating over time. Blue area = total review count growth.

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3.5★4.3★5.0★Jun '23Jun '24Oct '24Jan '26RatingReviews

Currently 4.3★ from 129 reviews

Gaining approximately 2 new reviews per month. Rating has remained stable at 4.3 over the tracking period.

Sale Prediction

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Free$5.00$9.99May '21Aug '23Jul '24Oct '25PredictedJul '26

Actual Predicted

This book is currently discounted at $1.99. It typically returns to around $9.99.

Prices shown in USD from Amazon US. We continuously pull new data to improve tracking. If dates look old, it usually means there has been no significant change since the last data point.

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Timothy Zahn

1 book on Vagrant Press

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