Overview

In 2055, social networks and humanity's weaknesses are the Sentinels' preferred tools. The aliens have been observing Earth for a century to suppress human technological advancements or emerging neurodivergence that would violate galactic laws. ​ Ostracized from society, physicist Scott Anderson breaks the Sentinels' rules. Scott captures primordial black holes, which are the size of protons but contain the mass of mountains and a million megatons of potential energy. These tiny black holes could power human interstellar travel and planet-killing weaponry-the same physics advancement the Sentinels prohibit. Scott is torn between scientific ambitions and protecting his nine-year-old autistic brother, Robby, who carries a rare genetic trait outlawed by the Sentinels. ​ The Sentinels would subjugate the human race and destroy those that defy them. ​ Scott Anderson dares to fight the aliens using the power of black holes.

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Reviews

Finalist - American Writing Awards 2024 ""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. . . JH Gruger demonstrates an extraordinary talent for making complex theoretical concepts both thrilling and accessible to readers of all backgrounds"" Amazon Reviewers: ""This was really such a fun and captivating read"" ""Arthur C. Clarke would have enjoyed this!"" ""a great sci-fi read. . . on the cusp of a dystopian Earth with secret alien overlords"" ""modern sci-fi written so well I got lost in the emotions and events happening in each chapter they feel so real"" ""lived rent free in my head for weeks when I was done"" FIVE STAR Readers' Favorite Book ReviewGravity of Sol-3 by JH Gruger is a tense, cerebral tale of rebellion and resilience set in a near-future Earth controlled by alien Sentinels. These extraterrestrials suppress technological progress and neurodivergence, threatening humanity's autonomy. Physicist Scott Anderson defies their control by manipulating primordial black holes-objects capable of revolutionizing interstellar travel or causing complete annihilation. Torn between scientific discovery and safeguarding his autistic brother Robby, Scott battles to outwit the oppressive Sentinels. This thought-provoking novel masterfully explores themes of ethics, freedom, and the resilience of marginalized communities, while delving deep into the complexities of family bonds and scientific responsibility in the face of overwhelming opposition. Author JH Gruger demonstrates an extraordinary talent for making complex theoretical concepts both thrilling and accessible to readers of all backgrounds, and I loved the way so many sophisticated ideas were woven into an exciting tale that was still easy to read. I was particularly moved by the emotional depth of Scott and Robby's relationship, which anchors the story in genuine feeling, and the dialogue between them was emotive and moved the plot forward naturally. The portrayal of neurodivergence breaks away from common stereotypes and gives authenticity and complexity to the central conflict, while the writing seamlessly integrates hard science into the plot for a story that is intellectually stimulating and emotionally powerful. The Sentinels stand out as one of the most chilling antagonists I've encountered in recent science fiction, reflecting contemporary anxieties about surveillance and control in a way that feels unnervingly plausible. Overall, I highly recommend Gravity of Sol-3 to anyone seeking a thoughtful, scientifically grounded science fiction novel that doesn't sacrifice heart for intellectual depth.

""Arthur C. Clark would have enjoyed this!"" ​ ""a great sci-fi read. . . on the cusp of a dystopian Earth with secret alien overlords"" ​ ""modern sci-fi written so well I got lost in the emotions and events happening in each chapter they feel so real"" ​ ""lived rent free in my head for weeks when I was done"" -Amazon Reviewers

Author Information

Award-winning author JH Gruger writes Hard Science Fiction built upon existing science research and theory. His science provides circumstances of tension and high stakes, but above all, the characters drive the story. You won't find warp drives, jump gates, or dragons in his books. Gravity of Sol-3 is JH Gruger's debut science fiction novel. He has degrees in engineering from Carnegie-Mellon University and Southern Methodist University, has decades of experience in computer architecture and design, and managed international engineering teams in North America, Asia, and Europe. After raising a family in Austin and Dallas, he left behind his career in computer engineering to devote himself to writing science fiction. JH Gruger roams with his wife and family between Dallas and Santa Fe, writing stories while accompanied by three telepathic Italian Greyhound therapists.

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