Chapter 760: Annihilation
Two minutes and forty-five seconds later, fire engulfed the entire visible face of the planet.
Viewed from space, Mar Sara was now a uniformly burning orange sphere, its surface churning with massive firestorms and vortexes.
There were no clouds, no distinct topographic features, only pure fire.
The atmospheric combustion not only unleashed tremendous thermal energy, but also catalyzed complex chemical reactions.
The extreme heat decomposed portions of the hydrocarbon gases into carbon black and hydrogen, which in turn fueled the combustion to produce water vapor. The original atmospheric composition was completely rewritten.
"Surface temperature monitoring: Average temperature in equatorial regions has risen to 820°C and continues to climb," the Tech-Priest continued to report. "Polar region temperature: 600°C. All surface moisture has completely vaporized. Silicate rocks are beginning to soften."
Ryo pulled up thermal imaging of several key areas.
The plains that were once primary incubation clusters for the Swarm were now a white-hot sea of molten slag.
The remnants of the creep, the sludge of Swarm units, and the organic matter in the soil were all carbonized and vaporized under the extreme heat.
Chitinous Swarm structures decomposed rapidly under the searing temperatures, releasing pungent fumes that subsequently fed into the global inferno.
Subterranean structures fared no better.
The extreme heat penetrated deep underground via thermal conduction and radiation, scorching numerous hives directly into carbonized husks.
While some deeper hives might have temporarily survived, their internal temperatures quickly spiked to lethal thresholds, and their oxygen supplies were thoroughly depleted.
The combustion raged on.
Nine minutes in, the concentration of combustible gases across the global atmosphere began to drop precipitously.
The brightness and temperature of the flames started to wane, yet the burn persisted.
Soot particles from incomplete combustion remained suspended in the atmosphere, forming global black clouds that trapped and absorbed further heat.
"Real-time atmospheric composition changes: Oxygen levels decreased by 38%, carbon dioxide levels increased by 280%, water vapor content surged dramatically. Nitrogen ratio remains relatively stable, though portions have reacted with oxygen under extreme temperatures to form nitrogen oxides."
Fifteen minutes in, the fire weakened significantly.
The majority of combustible gases had been consumed.
The planet's surface was now bathed in the dark-red glow of dying embers, intercut with swirling black smoke.
Surface temperatures remained extraordinarily high, though the upward climb had halted.
Twenty-one minutes later, the large-scale combustion concluded.
Only sporadic, smaller fires fueled by localized gas pockets or combustible debris remained.
The atmosphere was thick with smoke and ash, dropping visibility to near zero.
"Atmospheric combustion phase complete," the Tech-Priest summarized. "Duration: 21 minutes, 42 seconds. Total energy release estimate: 9.8 × 10^23 Joules, approximately 234 trillion tons of TNT equivalent—equivalent to 1.1% of the total solar energy the planet receives in an entire year."
Ryo recorded the numbers.
A textbook, highly efficient planetary purification.
The energy release was concentrated within a remarkably brief window, and the surface destruction was absolute.
"Initiate follow-up scans. Evaluate purification efficiency," he ordered.
The observation satellites adjusted their sensor arrays, piercing through the slowly settling smoke layer to scan the planet's surface.
The initial scan results returned swiftly.
Optical imaging revealed a completely transformed Mar Sara.
All vegetation and Zerg creep had vanished without a trace.
The soil was rendered into vitrified, charred black crusts.
The outlines of mountain ranges and hills persisted, though their surfaces were coated in melted and resolidified rock shells.
The plains were cracked open in expansive fissures, with dull red glimmers radiating from within the chasms.
Lakes and oceans were entirely evaporated or boiled dry, leaving behind desolate basins coated in salt frost and glassy deposits.
Thermal imaging showed surface temperatures still hovering above 380°C, cooling slowly.
Deeper fissures and subterranean hollows remained hotter still, harboring remnant flames.
Biological signal scans registered zero.
Not a single trace of life remained—neither Swarm, nor indigenous fauna, nor possible human survivors.
The dual mechanism of viral decomposition followed by atmospheric combustion had ensured absolute extermination.
Atmospheric scans revealed an environment rendered completely hostile: extremely high concentrations of carbon dioxide, negligible oxygen, saturated with toxic nitrogen oxides, carbon monoxides, and suspended soot particulate.
This atmosphere could not support carbon-based life for the foreseeable future.
"Purification assessment: Complete," the Tech-Priest reported. "Surface organic matter clearance rate estimated at over 99.99%. Any conceivable micro-traces remaining are sealed beneath deep geological formations or polar ice caps, devoid of biological vitality and incapable of posing any threat. The planet has transitioned into a 'Death World' state; under natural conditions, recovering life would require millions of years."
Ryo reviewed the completed test debrief.
From viral dispersal to atmospheric ignition, the entire sequence had spanned forty-six hours and fifteen minutes.
The Swarm—that massive biological collective that had blanketed the majority of the planet's surface—was completely erased.
The cost was the absolute destruction of the biosphere.
The test was a success.
The Virus Bomb had proven to be an exceptionally lethal countermeasure against the Swarm.
Its mechanism struck directly at the Swarm's fundamental vulnerabilities: high reliance on massive biomass bases, zero defense against microscopic biochemical vectors, and a collective hive mind network that actively accelerated viral dissemination.
"Log complete telemetry and data chains. Archive under 'Xenos Threat Response Protocols—Swarm' database," Ryo commanded. "Weapon efficacy rating: Superior. Recommended as a primary Exterminatus protocol against large-scale Swarm incursions."
He paused momentarily, adding: "Also note limitations: The Virus Bomb requires an incubation window to complete dispersal and breakdown, rendering it unsuitable for tactical emergencies requiring immediate resolution. Furthermore, it is completely ineffective against non-biological targets such as machine civilizations. Efficacy may diminish against targets possessing advanced biochemical defenses or sealed closed-loop biospheres."
The data was encrypted and secured. This benchmark would serve as a vital operational standard for future engagements against the Swarm.
At that moment, an encrypted transmission request arrived from Valerie, flagged with 'Medium' priority. Ryo accepted the link.
"The Agria evacuation has concluded," Valerie's holographic projection materialized, the corridors of the Hyperion visible in the background. "Raynor's team successfully evacuated the majority of civilians, and Dr. Hanson has boarded. The Raiders will depart this system shortly. Our detachment sustained zero casualties; telemetry capture is complete. Requesting operational directives."
Ryo evaluated the situation rapidly. While the Swarm presence on Agria was formidable, it had not reached the total infestation seen on Mar Sara.
Comparative testing could establish the efficacy of alternate weapon platforms across varying phases of planetary infestation.
"Remain embedded with Raynor's team; maintain observation," Ryo replied. "Your primary objective is to ascertain Raynor and Tychus's upcoming target coordinates for the next Artifact fragment. Secure precise location data before they initiate physical excavation operations."
He paused slightly, emphasizing: "Once coordinates are confirmed, do not alert them. Report immediately. I will evaluate the feasibility of... securing the asset prior to their arrival."
"Understood," Valerie confirmed. "I will integrate into their operational core and extract the intel for the next dig site."
The transmission closed.
Ryo shifted his gaze away from the scorched remains of Mar Sara toward the galactic map.
The Artifact fragments—ancient constructs possessing unique energy signatures—likely carried strategic value far beyond simple research.
Securing them ahead of time would provide substantial strategic leverage, whether for reverse-engineering their technological foundations or using them as bargaining chips against Raynor or other local factions.
On a broader scope, the looming Swarm menace, the political volatility of the Terran Dominion, and the presence of the Protoss offered endless variables and opportunities.
The Eternal Seeker required precise intelligence to orchestrate its subsequent interventions and resource deployments.
His logic core initiated preliminary combat models for a preemptive recovery operation, while quietly instructing the Tech-Priests to begin standard diagnostics and preparations for the Nova Cannon, leaving target and timing unassigned for now.
The Eternal Seeker adjusted its maneuvering thrusters, settling into a silent vigil.
Out in orbit above Agria, the Hyperion slipped into the void, carrying its survivors toward the unknown.
Intelligence acquisition and operational planning moved forward in lockstep.