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JH GRUGER

Official Website 

The Sentinel Suppressions

VOX PROXIMA PRESS

Books

BOOKS

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Gravity of Sol-3

“Arthur C. Clarke would have enjoyed this!”

“a great sci-fi read. . . on the cusp of a dystopian Earth with secret alien overlords”

 

​“lived rent-free in my head for weeks when I was done”

 

"such a fun and captivating read"
 
"modern sci-fi written so well I got lost in the emotions and events happening in each chapter they feel so real"


"Excellent, well-paced, believable storyline. If I could give this 6 stars, I would".

-Amazon Reviewers

Scott Anderson never asked to be a revolutionary. He only wanted a quiet life surrounded by equations, far from the political violence tearing his world apart. But when fascist forces begin targeting his family, Scott is forced to flee everything he knows — trading safety for survival and stumbling headlong into a scientific research project where the most brilliant physicist alive is pushing humanity toward a discovery that could change everything.


The problem? Someone — or something — has already decided that humanity isn't ready.


The alien sentinels have watched Earth for over a hundred years. Their directive is simple and merciless: no species advances primordial black hole technology. The rules aren't negotiable. Prevention is insidious. Violations bring swift enforcement. Orbital bombardments rain down on research facilities, silencing physicists who come too close to the truth. Scott finds himself caught between earthly fascists and cosmic enforcers, forced to ask a terrifying question — in a universe governed by power, is the pursuit of knowledge itself an act of war?

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Buy now from most on-line retailers:

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Tyrants of Gravity

Alien attacks on Earth have failed, defeated by human advances in physics and telepathy. But a Centauri fleet near the Sol system reacts with fury, determined to find out why a routine Sentinel Suppression mission failed, and capture and eviscerate the captain who betrayed them.

 

Two autistic boys, Robby and Luca, search for their lost parents—lost in the dystopia created by the alien attacks. But the rogue alien captain, Cap, is thrilled by the emergence of the boys’ telepathy mutation and helps them in their quest.

 

Scott Anderson, Robby’s physicist brother, joins the Space Force weapons development team to defend against the approaching alien fleet. But man’s technology that harnesses the energy of primordial black holes is primitive compared to the Centauri fleet’s weapons.

 

Centauri warships launch kinetic energy projectiles and planet killers, forcing a frantic search for weapons to defend Earth. Scott’s and Robby’s telepathic collaboration with the alien captain is the key to devising weapons effective against the Centauris—the only hope for man’s survival.

Buy now on most online retailers:

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NEWS & REVIEWS

"...for readers who want their science fiction to argue, bruise, and burn. Tyrants of Gravity is a sci-fi novel that thinks big and hits with surprising heart."

 

"Lovers of sci-fi novels blended with adventure, suspense, and action will find Tyrants of Gravity by JH Gruger an enthralling read."

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  • 2025 Readers' Favorite Bronze Medal Winner,

Fiction - Science Fiction genre

 

 

 

 

 

 

  • Finalist: American Writing Awards 2024 

  • Finalist: Literary Global Awards 2024

Fiction, Fantasy & Sci Fi 

AND 

Fiction, Thriller/Adventure

  • Global Book Awards Bronze Medal Winner 2024

Techno-Thriller

"A tense, cerebral tale of rebellion and resilience set in a near-future Earth controlled by alien Sentinels. . . one of the most chilling antagonists I've encountered in recent science fiction."​ 

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"Engineering New Worlds: How JH Gruger Fuses Science & Storytelling in His Sci-Fi Series"

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BIO

JH Gruger writes Hard Science Fiction. “For readers who want their science fiction to argue, bruise, and burn … that thinks big and hits with surprising heart.”—from Literary Titan’s 5-star review.


Gruger’s first two novels, Gravity of Sol-3 and Tyrants of Gravity, have won multiple awards. He holds engineering degrees from Carnegie Mellon and Southern Methodist Universities, has decades of experience in computer architecture and design, and has managed worldwide engineering teams. Early in his career, he designed and architected military electronics systems, including infrared image tracking systems for the first stealth fighter and anti-tank missiles.


After raising a family in Austin and Dallas, Gruger left behind a career in computer engineering to devote himself to writing science fiction and traveling between Dallas and Santa Fe, accompanied by two telepathic Italian Greyhounds.
 

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