Cover of Extinction Engine
Thriller ★ 4.27 · 91 Audiobook Available Exclusive

Extinction Engine

by Bryce Hollis

  • 50 min read
  • 8 chapters
  • Published 23 December 2025
Ticking ClockScience ThrillerCat and MouseExtinction-Level ThreatGrief ThrillerMad ScientistHeroic SacrificeNear-Future ThrillerPsychological Manipulation
Read in the FreeBooks app

About this book

Summary

Forty-seven hidden satellites are steering a planet-killing asteroid straight at Earth—and the clock reads six months. Astronomer Patricia Hughes must dismantle an impossible conspiracy engineered by Dr. Alan Fowler, a once-brilliant physicist shattered by personal tragedy and now convinced that obliterating all life is an act of mercy. With each satellite she destroys, Fowler reveals another failsafe. The sky Patricia has spent her career studying may soon be the last thing anyone sees.

Read a preview

Chapter 1

Chapter 1: The Anomaly

The coffee had gone cold three hours ago, but Patricia Hughes didn't notice. Her eyes remained fixed on the monitor, tracking the familiar dance of celestial bodies across the digital sky. The Catalina Sky Survey had been her home for eleven years, and she knew the rhythms of near-Earth objects the way a conductor knows a symphony.

Something was wrong with 2024-KT7.

She'd first flagged the asteroid six weeks ago—a respectable chunk of iron and nickel, roughly eight hundred meters in diameter, following a predictable elliptical orbit that would bring it within twelve million kilometers of Earth. Close by cosmic standards, but nothing to lose sleep over. The kind of object that made for good press releases and bad disaster movies.

But tonight, the numbers weren't adding up.

Patricia pulled up the orbital calculations again, comparing her fresh observations against the predicted trajectory. The discrepancy was small—barely noticeable if you weren't looking for it—but it was there. A deviation of 0.003 degrees. In space, that was the difference between a near miss and a direct hit.

"Computer error," she muttered, running the calculations again. Same result.

She reached for her phone and called Marcus Webb, the survey's lead analyst. He answered on the fourth ring, his voice thick with sleep.

"Patricia? It's two in the morning."

"I need you to check my numbers on KT7."

"Now?"

"Now."

There was a pause, then the sound of sheets rustling. "Send them over."

She transmitted the data and waited, her heart beating faster than it should. Twenty minutes later, Marcus called back.

"I'm seeing the same thing," he said, all traces of sleep gone from his voice. "That's not possible. Asteroids don't change course."

"Not on their own, they don't."

"What are you suggesting?"

Patricia stared at the screen, at the tiny dot that represented eight hundred meters of cosmic death slowly adjusting its path through the void. "I'm not suggesting anything yet. But I think we need to make some calls."

---

By dawn, Patricia had confirmed her findings with three independent observatories. By noon, she was on a plane to Washington. By evening, she was sitting in a windowless conference room at NASA headquarters, facing a wall of skeptical faces.

"Dr. Hughes," said Administrator Janet Chen, a silver-haired woman with the bearing of someone who had survived three decades of government bureaucracy, "you're telling us that a near-Earth asteroid has spontaneously altered its trajectory."

"Not spontaneously," Patricia said. "Deliberately."

The room went quiet. Patricia could feel the weight of their disbelief pressing down on her.

"The deviation is consistent with a sustained low-thrust acceleration," she continued, pulling up her presentation. "Something is pushing this asteroid. Something artificial."

"That's impossible," said Dr. Raymond Hicks, NASA's planetary defense coordinator. He was a heavyset man in his sixties, with the permanently exhausted expression of someone who spent his career preparing for disasters that never came. "We don't have the technology to move an asteroid that size. No one does."

"I didn't say we did it."

Another silence, longer this time.

Administrator Chen leaned forward. "Dr. Hughes, are you suggesting extraterrestrial involvement?"

"No." Patricia clicked to the next slide, which showed a spectrographic analysis. "I'm suggesting something much worse. Look at the emission signature. This isn't some exotic propulsion system. It's a directed energy beam—essentially a very powerful laser, heating one side of the asteroid and creating thrust through ablation. The technology exists. It's just never been deployed at this scale."

"And where is this beam coming from?" Hicks asked.

Patricia took a breath. "That's what I need help finding out. But based on the angle of acceleration, the source is somewhere in high Earth orbit."

The implications hung in the air like smoke. Someone had built a weapon in space. Someone was using it to push an asteroid toward Earth.

"How long?" Chen asked quietly.

"At the current rate of deviation?" Patricia pulled up her final slide. "Impact in approximately one hundred and eighty-two days. Give or take a week."

Six months. Six months until an asteroid the size of a small mountain slammed into the planet at forty thousand kilometers per hour. The energy release would be measured in gigatons. The death toll would be measured in billions.

"We need to find that beam," Chen said. "And we need to shut it down."

---

They gave Patricia a team, a budget, and a deadline. The team consisted of twelve specialists drawn from NASA, the Air Force Space Command, and three-letter agencies she wasn't supposed to know about. The budget was classified but substantial. The deadline was measured in days, not weeks.

They set up shop in a secure facility in Colorado, surrounded by mountains and armed guards. Patricia spent the first three days mapping the orbital mechanics, trying to pinpoint the source of the beam.

The math was elegant but frustrating. The beam had to be powerful enough to heat the asteroid's surface from millions of kilometers away, which meant a massive power source. It had to be precisely aimed, which meant sophisticated tracking systems. And it had to be hidden, which meant whoever built it had gone to extraordinary lengths to avoid detection.

"We've scanned every known satellite in high orbit," said Captain Sarah Mitchell, the Air Force liaison. She was a compact woman with close-cropped hair and the kind of calm efficiency that came from years of crisis management. "Nothing matches the profile."

"Then it's not a known satellite," Patricia said. "What about the unknowns?"

Mitchell pulled up a display showing Earth surrounded by a cloud of orbital debris. "There are over thirty thousand tracked objects in orbit. About two thousand are active satellites. The rest is junk—dead satellites, rocket stages, fragments from collisions. Any one of them could be hiding something."

"Or it could be distributed," said Dr. James Okonkwo, the team's systems analyst. He was a Nigerian-born MIT graduate with a gift for seeing patterns in chaos. "A network of smaller satellites, each contributing part of the beam. Harder to detect, harder to disable."

Patricia nodded slowly. "A phased array. That would explain why we can't find a single source." She turned to the wall display, studying the orbital paths. "But it would also require precise coordination. Someone would need to control all those satellites simultaneously."

"Which means a command signal," Mitchell said. "Something we can trace."

"Exactly." Patricia felt the first stirring of hope since this nightmare began. "Find the signal, find the controller."

---

They found the signal three days later.

It was buried in the noise of normal satellite communications, disguised as routine telemetry data. But Okonkwo's pattern-recognition algorithms picked it out, a faint but distinct signature broadcasting on a frequency that shouldn't have been in use.

"It's coming from somewhere in the western United States," he said, highlighting a region on the map. "Nevada, maybe Utah. The signal bounces through multiple relays before reaching the satellites, but the origin point is definitely terrestrial."

"Can we narrow it down?" Patricia asked.

"Give me forty-eight hours."

He did it in thirty-six. The signal traced back to a small town in the Nevada desert, a place called Mineral Springs that barely registered on most maps. Population: 847. Primary industry: nothing. The kind of town that existed because someone had built it a hundred years ago and no one had bothered to tear it down.

"What's there?" Mitchell asked, studying the satellite imagery.

"Not much," Okonkwo said. "A few hundred houses, a gas station, a diner. But look at this." He zoomed in on a compound at the edge of town—a cluster of buildings surrounded by a chain-link fence. "According to county records, this property was purchased eighteen months ago by a private research foundation. The Prometheus Institute."

"Never heard of it," Mitchell said.

"Neither had anyone else until I started digging." Okonkwo pulled up a corporate filing. "It's a shell company, layers of ownership designed to hide the real owner. But I found a name buried in the paperwork. Dr. Alan Fowler."

Patricia felt the blood drain from her face. "Alan Fowler?"

"You know him?"

"Everyone in astrophysics knows him. He's a legend." She sat down heavily in her chair. "Or he was, until his family died."

The room went quiet as Patricia pulled up Fowler's file. The photo showed a distinguished man in his sixties, with silver hair and kind eyes that had probably never looked kind again after 2021.

"Alan Fowler," she said. "Former professor of theoretical physics at Stanford. Pioneered work in directed energy systems and orbital mechanics. His research laid the groundwork for half the satellite technology we use today." She paused. "His wife and two daughters died during the pandemic. He resigned from Stanford three months later and disappeared."

"Disappeared where?" Mitchell asked.

"No one knew. There were rumors he'd had a breakdown, that he'd become obsessed with some kind of doomsday philosophy. But no one took it seriously." Patricia looked at the compound on the screen. "I guess we should have."

"So we have a grieving genius with the knowledge to build a planet-killing weapon and a possible motive," Mitchell said. "What's the motive?"

Patricia thought about the man she'd met once at a conference, years ago. He'd been brilliant and warm, the kind of scientist who made everyone around him feel smarter. She thought about what it would take to turn that man into someone who would end the world.

"I think," she said slowly, "he wants to end suffering. All of it. Permanently."

Take the story with you

Read anywhere with FreeBooks

Keep reading on your phone and discover thousands more books in the FreeBooks app.

Open this book in the app