The Dark Interval
The relay’s outer hull ticked as it cooled, a patient metallic sound that never let Hanna Ekström forget where she lived.
No gravity. No air outside. No forgiving margins. Only insulation, radiation foam, and cables that carried other people’s voices through emptiness.
Relay Control glowed in a tight rectangle of light. The rotation ring sat offline to save power, so every movement came with a slow drift and a tether tug.
The status wall scrolled in disciplined lines.
SIGNAL QUEUE: 18,402 PENDING
Eighteen thousand messages meant eighteen thousand hands that had typed into darkness and hoped the network still existed.
A chime sounded, muted by the station’s power throttles.
Hanna opened the incoming list. The top entry carried a priority stamp the software insisted on painting red.
DISTRESS. LIFESUPPORT. CIVILIAN.
The sender ID resolved.
CSV LARKSPUR
A civilian space vessel. Old registry. Cheap patchwork shielding. Her throat tightened in a way recycled air could not explain.
A second alert rose above the queue.
SOLAR WEATHER WARNING: CORONAL MASS EJECTION. ETA 00:47.
The graph climbed like a cliff.
Hanna pulled up comms integrity. The overlay painted the relay antennas in pale color.
Expected signal loss window: 00:29 to 01:12.
Forty-three minutes of nothing. A dark interval.
The relay did not answer distress calls. It forwarded them, if it could, to whatever UEN node still listened in this sector.
The routing map offered three options.
Node HERMES: offline.
Node ANCHOR: degraded.
Node KITE: active.
Active meant it answered pings, not that it had room for a flood.
The Larkspur’s last position icon hovered near a dust belt that scattered radio into static. Direct transmission to Node KITE would miss. Relay transmission could bend around it with a tight beam and a higher carrier.
Higher carrier meant higher gain.
Higher gain meant heat.
Heat meant radiators.
Radiators during a CME meant damage that never healed.
The station’s systems voice cut through the quiet.
“CME protocol preheat begins in forty minutes. Recommend antenna stow and external radiator closure.”
Recommend. As if the station had feelings.
Hanna opened the distress packet.
Oxygen remaining: 02:11.
A manifest followed. Medical ice, protein bricks, algae starter.
Supplies for someone else. Another set of hungry mouths.
A line at the bottom blinked.
VOICE ATTACHMENT: 00:17
The rules did not mention audio. The software labeled it optional.
Hanna pressed play.
A woman’s voice came through, thin and clipped by compression.
“Relay station, if anyone’s there. This is Larkspur. Oxygen’s bleeding. We can patch it if we get docking guidance. Our nav’s drifted. Please. We have kids asleep in the galley.”
Static swallowed the rest.
The room stayed too quiet after.
Hanna pulled up the power panel.
Cascade Reactor: 63%.
Heat sink saturation: 71%.
Barrier shield systems: 0%.
Shields stayed cold most days. Running them during a storm cost power the station rarely had.
A forwarding route existed. It required gain beyond the safe continuous limit.
MAX CONTINUOUS: 1.0
At 1.4, the relay could punch the packet through.
At 1.4 without radiators, the heat sinks would climb until the station shut itself down. The queue would freeze. The dark interval would start early.
A separate tab waited.
CME PROTOCOL: TEMPORARY SHIELD SPIN-UP
Shields pulled power. They also reduced particle penetration enough to keep the external radiators open for a short window.
Fifteen minutes at twelve percent shield strength would spike reactor draw. The station could survive it if nothing else went wrong.
Hanna opened station comms.
“Control to Ops. Shield spin-up request for emergency transmission.”
The reply arrived after a pause, flat and tired.
“Denied. CME protocol in forty minutes. Keep radiators closed until then.”
No name. No argument.
Denied.
Hanna stared at the denial text. The cursor blinked beside it, patient.
The Larkspur packet blinked too, more human than the cursor.
A logistics notice flashed on her side panel.
Personal draw limit enforced at 05:00.
The clock read 04:58.
Water rationing already scraped her mouth raw. Two more days without full allocation would turn the station into a desert she carried in her throat.
Her hand drifted toward the manual override panel.
Two keys.
One belonged to Ops.
One belonged to Relay Control.
Her own key token hung on her tether, stamped with the UEN crest from back when the crest meant a chain of ships and stations, not a handful of exhausted people.
The other slot sat locked, waiting for authorization.
A line of small text in the CME protocol documentation caught her eye.
Emergency variance authorized for preservation of life. Record justification. Accept ration penalty.
Accept ration penalty.
The station could take her water. It could take her food. It could not take her hands off the controls.
Hanna opened the variance field and typed.
Justification: Civilian distress, life support failure. Direct routing unavailable. Shield spin-up enables safe radiator use for brief high-gain transmission.
She attached the voice clip.
The system prompted for acknowledgment.
Ration penalty: two days water reduction.
A memory surfaced as a sensation, not a picture. Cold lake water on Earth before anybody measured sips. Before the sky held alien fire.
Hanna pressed ACCEPT.
The console beeped. The second key slot unlocked with a green check.
Barrier shields: 0% to 12% in 00:45.
A low vibration traveled through the station frame, into Hanna’s boots, into her bones. On the external feed, the antenna truss gained a faint blue shimmer, like heat haze made visible.
Hanna slid the gain control to 1.4.
Heat sink saturation climbed. 74%. 80%. 86%.
She pinned the Larkspur packet to the top of the outgoing list and locked its route.
Node KITE, narrowbeam.
The transmission timer began.
00:06.
00:05.
Her pulse beat in her throat. The station’s air smelled sharper as the scrubbers ramped against rising heat.
00:01.
00:00.
The outgoing indicator flashed.
SENT.
The Larkspur packet vanished from pending.
Hanna lowered the gain back to safe. The heat number slowed, then steadied.
Heat sink saturation: 88%.
It stayed below the kill threshold by a handful of percentage points.
The shield panel ticked down. Twelve. Eleven. Ten.
The station prepared to stow antennas for the incoming storm. Lights dimmed to a thinner shade of white.
A chime sounded, different from the queue.
INCOMING: NODE KITE
Hanna pulled the packet into view.
MESSAGE TYPE: ROUTING ACKNOWLEDGMENT
Received. Forwarded to SAR asset. Hold position.
Search and rescue.
The words pressed warm against the cold place behind her ribs. Hanna released a breath she had been holding too long.
CME protocol took full control. Antennas folded inward. Radiators sealed. The relay tightened its little bubble of warmth against the oncoming storm.
The queue counter continued climbing. It would keep climbing.
Somewhere in the dust belt, a civilian space vessel would hear something other than static.
Hanna anchored her boots under the console rail and opened a fresh log entry.
Emergency variance executed. Outcome: distress forwarded. Station stable.
A red icon flashed.
Ration penalty applied.
The system did not care why.
Hanna cared. That had to be enough.
The hull ticked, patient as a heartbeat.
The dark interval would pass.
Hanna would be here when the first green lines returned.
Author’s Note: Relay stations rarely get the spotlight in military science fiction, yet quiet infrastructure keeps whole regions alive. This story takes place in Year 9 of the Post-Invasion era, when survival depended on fragile networks and the people who chose to keep them running.
If you enjoyed this story, you can follow the main story arc in The Exodus Rush, the first book in The Vethrak Requiem series.