Split-clock rescue file RC-13, with Cthulhu Eternal statistics
Seventeen minutes
The transcript below combines the West Vale control-room archive with audio recovered from Rescue Specialist Mara Vey’s suit recorder. Control-room timestamps use facility time. Vey’s timestamps use proper time accumulated by the cesium reference on her pressure harness. The two clocks were synchronized before entry.
| Facility time | Vey proper time | Transcript |
|---|---|---|
| 14:03:00 | 00:00 | CONTROL: You are cleared through the first boundary. Confirm visual on Doctor Sato. |
| 14:03:08 | 00:08 | VEY: Visual. He’s standing. I thought you said he was down. |
| 14:03:19 | 00:19 | CONTROL: Repeat. Your carrier is shifting. |
| 14:03:31 | 00:31 | VEY: Sato is standing. Something is around him. Long body, attached to the blue material. It hasn’t reacted to me. |
| 14:04:00 | 00:37 | CONTROL: Do not proceed. Your suit clock has lost twenty-three seconds. |
| 14:04:43 | 00:44 | VEY: My clock is fine. Your voice is getting faster. |
| 14:06:12 | 01:03 | CONTROL: Vey, withdraw. We are receiving one second of your audio every nine seconds. |
| 14:10:00 | 01:44 | VEY: It has its mouth inside him. He is alive. Sato, look at me. |
| 14:10:01 | 01:45 | SATO: It has been four minutes. Why did you leave me here for four minutes? |
| 14:17:28 | 02:09 | CONTROL: The image is not updating. We can see you both, but your positions have changed by less than three centimetres in seven minutes. |
| 14:33:02 | 02:41 | VEY: Your last transmission arrived all at once. Slow it down. I can’t understand you. |
| 15:00:00 | 03:12 | CONTROL: Do not use the laser cutter. Beam energy at your position is exceeding the command value. |
| 15:00:07 | 03:19 | VEY: Too late. It noticed. |
| 16:48:31 | 03:46 | VEY: Sato says the animal came out of the Hound remains. He says it is not attacking him. He says it is cleaning. |
| 22:00:00 | 04:01 | CONTROL: Six hours have elapsed here. The projection boundary is strengthening. Your outward signal is below voice reconstruction threshold. If you receive this, activate tether mode and move radially toward beacon green. Do not follow visual parallax. |
| Day 2, 09:14 | 04:08 | VEY: The mouth is empty. Sato is still screaming. I can see his face through it. |
| Day 4, 11:52 | 04:17 | VEY: Control, stop sending. Every message is arriving inside the next one. He can hear three days of you deciding whether he is alive. |
At facility time 12:06 on Day 4, the external team collapsed the projection boundary. Vey came out with seventeen minutes and twenty-nine seconds on her harness clock. Sato’s clock read seventeen minutes and thirty-one seconds. Vey emerged only seventeen minutes older into a control room that had lived through nearly three days. She survived. Sato did not. The organism left through the dying gradient carrying tissue whose local decomposition was not due to start for another forty hours.
The name is almost right
Redshift Carrion are scavengers, named for the Hound remains they gather around. They collect where angular organisms fail to complete a stable projection into curved spacetime, and Hounds of Tindalos are the largest known source: a manifested Hound leaks heat, blue tissue, vacuum disturbance, and entropy while curved geometry forces its worldline into an intolerable local sequence, and when that projection collapses or dies, the surrounding metric does not always relax uniformly. Carrion settle along the resulting time-rate gradient and eat what is left.
The word carrion first meant the blue Hound material they congregate around. Then it picked up a second meaning. A living organism trapped deep enough in the same redshift gradient emits signals that become slower, dimmer, and less energetic to outside observers, and its locally active metabolism contributes almost nothing measured against external stationary time. To a Carrion, that organism has dropped into the same category as a dead Hound projection: locally rich, externally cheap, and going causally out of reach of anything that might object. The living victim has become economical prey.
Proper time and someone else’s clock
General relativity does not hand you one universal cosmic clock. Each timelike worldline accumulates its own proper time, the duration a clock moving along that worldline records. For a static observer outside a nonrotating spherical mass, the Schwarzschild metric gives
Here 
so that
When 
Nobody freezes at the horizon
The popular story has a distant observer watching an infalling astronaut freeze forever at a black-hole horizon. That sentence crushes several distinct facts into a misleading picture. Outgoing signals emitted progressively closer to a horizon take longer to reach a distant observer, arrive increasingly redshifted, and grow fainter, so the distant observer does not get a bright, permanently frozen photograph pasted onto a physical surface. They get less and less useful information from later events, while the infalling astronaut crosses the horizon in finite proper time without meeting a local wall. So Redshift Carrion cannot get their preferred feeding condition just by chasing freely falling prey. They need a victim held inside a persistent region of small lapse. For a true Schwarzschild black hole, holding stationary near the horizon takes proper acceleration
which diverges as you approach the horizon. No ordinary floor, cable, animal, or spacecraft can hover arbitrarily close. A Carrion’s angular attachment supplies the support ordinary matter cannot. Its feeding envelope is not a natural black-hole horizon transplanted into a room; it is a projected metric defect that holds prey on accelerated worldlines while exporting the necessary stress through angular degrees of freedom. This is painful before the feeding even begins.
Redshift and energy
A photon emitted locally with frequency 
with redshift factor
The photon’s locally measured energy is 
The energy has not vanished. In general relativity its accounting depends on spacetime symmetry and the observer defining it, and in a stationary spacetime the timelike Killing field supplies a conserved Killing energy while the lapse fixes the relationship between local and distant measurements. That mismatch is the Carrion’s feeding niche. A joule pulled from tissue deep in a lapse well can correspond to only a tiny Killing-energy change in the external accounting. The victim experiences a full joule removed from chemical bonds, body heat, or living tissue. External instruments see a weak, drawn-out change barely distinguishable from the redshifted decay of the original Hound carcass. The Carrion gets no free energy; it feeds where the bill arrives in a currency the outside world has nearly stopped valuing.
Temperature is also redshifted
Thermal equilibrium in a static gravitational field does not demand one identical local temperature everywhere. The Tolman–Ehrenfest relation gives
for an appropriate stationary equilibrium, so a deeper region can hold a higher local temperature and still be in global equilibrium once gravitational redshift is included. This is not an exploitable ordinary temperature gradient; a heat engine cannot circulate energy around the equilibrium field and get work for free, because the redshift of heat and work closes the account. Redshift Carrion feed on systems violently out of equilibrium instead: incomplete Hound projections, forced static prey, decaying angular fields, radiation crossing a changing lapse boundary, and the external apparatus maintaining the defect. That keeps the creature attached to real thermodynamics rather than using “time dilation” as a universal energy source.
The Tindalosian axiom
Redshift Carrion are angular scavengers whose projected bodies can span stationary regions with different lapse factors. They anchor to preexisting angular metric damage, extend that damage around nearby matter, and metabolize finite local energy while exchanging its redshifted Killing energy with the external environment.
Three things follow. First, a Carrion cannot build a severe redshift boundary in ordinary flat spacetime from nothing. It needs an anchor: a dead or collapsing Hound projection, a false-vacuum defect, an angular artifact already distorting proper time, the boundary of a Tunneller transition, a laboratory analogue horizon whose mode structure can be coupled into the angular sector, or a genuine strong-gravity environment. Second, its body does not run on one global physiological clock. Segments projected onto different lapse surfaces accumulate different proper times, and angular continuity holds the organism together where ordinary chemical tissue would shear, desynchronize, and fail. Third, it does not need to kill before feeding. It extends the existing lapse well around a victim, holds the victim roughly stationary inside that geometry, and starts extracting local free energy. From outside the feeding gets slower and fainter. Locally it goes at the rate of an animal eating.
Analogue horizons are not miniature black holes
Laboratory systems can reproduce equations analogous to fields propagating in curved spacetime. A fluid flowing faster than its sound speed can make a sonic horizon for phonons; optical media, water waves, Bose–Einstein condensates, and other systems can support comparable effective causal structures for particular excitations. These experiments do not generate astrophysical gravity. A technician standing beside a sonic black hole does not feel human-scale gravitational time dilation, and the lab floor does not grow an event horizon. They still matter to the ecology, because an analogue horizon provides a tested mode structure, a boundary across which some excitations cannot propagate outward, with frequency mixing, redshift, and horizon-like kinematics. The Tindalosian axiom lets a Carrion larva use that effective structure as a template, and if angular contamination is already present, the larva can transfer the mode geometry from the experimental excitations to its own projected field. The analogue supplies a template from which something angular learns the relevant distinction. By itself it produces no real gravitational field.
Anatomy across clocks
Locally, a Redshift Carrion looks like a radial, many-segmented scavenger built around one feeding axis. Its mouth stays on the low-lapse side nearest the carcass or the victim. Broad anchoring limbs reach outward across surfaces of increasing lapse, and ribbed membranes lie along equal-time-rate surfaces as if each were a gill separating one clock from another. Colour depends on the observer. From outside, the deeper segments redden, darken, and slow, and the animal looks enormously elongated because images from different depths show different stages of its motion; a limb can still be visible in one position while later light from that same limb has not escaped yet. Locally, the tissue is pale blue, warm, and rapidly active, with dark lines racing through it toward the mouth and the outer segments moving with impossible compression, running long sequences of anchoring behaviour between one local heartbeat and the next. Neither observer is seeing an illusion; they are receiving light along different relationships to the lapse field. The Carrion continually molts tissue across its body: a segment that has built up too much differential proper time separates along a clean surface and becomes blue residue, and its deeper tissue can be subjectively young while its outward anchoring structures have lived through days of maintenance. No ordinary nervous system could coordinate the whole animal. Its angular body treats the separated proper-time histories as one anatomy.
Lapse Maps
Do not run Redshift Carrion with another escalation track. Map the environment into zones and give each a Lapse Rating,
where 
| Lapse Rating | Zone | Observable signs |
|---|---|---|
| 1 | Normal | Clocks and carriers agree within ordinary error. |
| 2 | Amber | Voices shift noticeably; synchronized clocks diverge; moving objects trail displaced images. |
| 5 | Red | Outward speech goes slow and low; incoming messages compress; thermal readings disagree by frame. |
| 10 | Deep red | Visual motion nearly stalls externally; remote targeting uses badly outdated positions. |
| 50+ | Black boundary | Useful outward signals approach loss; external interventions advance hours or days during local minutes. |
| Causal loss | Closed region | No future-directed outward signal reaches the reference region while the boundary persists. |
These are deliberately coarse, expressing dramatic ratios and operational consequences, not a claim that an improvised atomic clock produces exactly one of five convenient integers. Characters can find lapse boundaries with two synchronized clocks moved along different routes, spectral lines from a calibrated source, pulses transmitted both inward and outward, phase comparison between independent oscillators, radar or lidar round-trip timing, temperature measurements read with the local lapse, or the apparent slowing and reddening of known motion. A successful Science, Engineering, SIGINT, Navigate, or relevant test identifies one zone boundary and its approximate Lapse Rating; a second method confirms the direction of decreasing lapse and whether the boundary is stable, moving, or strengthening. One clock is not a map. It can report its own elapsed proper time but cannot, alone, establish how another worldline differs.
The Mission Clock
Characters inside a lapse zone experience their actions normally. Do not make a player sit out nine rounds because their Protagonist is in Lapse 10. Instead, keep an External Mission Clock with scenario events at known tick values, where one tick is a useful unit of reference-frame time: a combat round, a minute, an hour, a day, a year, whatever the operation needs. After each exchange or completed task, advance the Mission Clock by the highest Lapse Rating occupied by a group that acted. One round in Lapse 1 advances it 1 tick; one round in Lapse 5 advances it 5; a repair that normally takes 3 ticks eats 30 external ticks in Lapse 10; an injured Protagonist spending 10 local minutes on first aid in Lapse 50 may come out after most of an external day. For a split group, resolve one exchange per active location, then advance the external clock once using the deepest active zone. It is an abstraction, not a numerical integration of relativity, and its whole purpose is to preserve player turns while making deep-zone decisions expensive.
Set the events before play. Good thresholds include a remote power reserve running out, a Hound carcass finishing delocalizing, the Carrion completing a feeding stage, reinforcements arriving and activating unsafe equipment, a containment authority ordering sterilization, an outside witness leaving or retiring or dying, the anchor becoming a closed causal boundary, or a returning team discovering years have passed. The Mission Clock is public once the characters understand the lapse. The exact event identities can stay unknown, but the players should know that another local action costs five external ticks.
Communication across the field
Messages going inward and outward do not behave symmetrically. Outward messages climbing toward higher lapse arrive redshifted, stretched, delayed, and weakened: at Lapse 2 ordinary equipment can compensate, at Lapse 5 real-time conversation is impossible without buffering, at Lapse 10 treat them as arriving after the next exchange, and at Lapse 50+ they arrive only when the Mission Clock reaches an established reception event. Turning up transmitter power just gives you a brighter old message, not restored simultaneity. Inward messages sent toward lower lapse arrive blueshifted and compressed relative to the local receiver, so a long external transmission can land as a brief burst that equipment has to retune and buffer before a human can follow it, and at Lapse 5 or greater an uncorrected high-power carrier can damage electronics, while at Lapse 10 or greater a deliberately intense optical or microwave message can become a weapon at the destination. Characters can speak normally to others in their own zone. Across a severe boundary, use recorded statements, predefined signals, visual codes, and one-way instructions. The emotional cost is deliberate: the outside team cannot casually ask the victim what they need and get an answer before conditions have changed.
Crossing the gradient
Moving across lapse zones is not automatically harmful. Astronauts and clocks routinely follow worldlines accumulating different proper times without being torn apart. The danger here is that the Carrion’s field holds neighbouring parts of an object on sharply different accelerated trajectories. A person crossing gradually with suitable support stays intact; a rigid object spanning several steep zones takes extreme differential stress. When crossing an active boundary without a mapped route, test Athletics, DEX×5, Navigate, or an appropriate vehicle skill. Success enters the next zone and stays oriented. Failure loses an action, takes 1D4 from acceleration or impact, and arrives displaced. A fumble pins the character across the boundary, taking 1D6 per exchange until released or the gradient is reduced. A safety tether anchored in a different lapse zone does not act like an ordinary rope; its tension carries delayed control inputs and differential acceleration, and proper extraction wants segmented winches, local load sensing, and independent clocks along the line.
Attacks across lapse zones
Use the attacker’s and target’s Lapse Ratings. Attacking inward: an electromagnetic attack sent from lower lapse toward higher lapse is blueshifted at the destination, and the target’s apparent position is old. Attacks across one or more unmapped boundaries suffer −20%; if the target’s position is locally marked or predicted, remove that penalty; a laser, microwave weapon, or comparable directed-energy attack moving inward gains +2 damage for each major zone crossed, maximum +6; and a Lethality attack moving inward increases its rating by 5 percentage points, maximum 25%. The extra energy may injure anyone near the target and can strengthen or collapse the anchor, so remote rescue fire is never clean. Attacking outward: radiation and projectiles climbing outward lose useful energy relative to the external frame, so mundane ranged damage is halved after Armour, Lethality ratings fall by 5 points to a minimum of 5%, and the target gains +20% to Dodge if acting on more recent local information than the attacker. Fighting locally: characters sharing a lapse zone resolve attacks normally. Entering the victim’s frame removes most of the Carrion’s redshift protection, and it commits the rescuer to that clock.
Feeding
A Carrion feeds only inside a zone anchored to angular metric damage. It cannot Redshift Envelop a pedestrian on an ordinary street. Once attached, it extracts heat, chemical free energy, electrical gradients, and eventually structured tissue, and external monitors underestimate the rate because the relevant signals and Killing energy are redshifted while the victim experiences ordinary injury. Do not build a separate feeding track. Put feeding events straight on the Mission Clock. Threshold 1: fatigue, cold, 1D4 WP loss. Threshold 2: 1D6 HP damage and loss of fine motor control. Threshold 3: it removes a specific organ, limb function, memory-bearing neural region, or angular correlation. Threshold 4: death in the victim’s local frame. Threshold 5: outward evidence of the death finally becomes recoverable. The interval between Thresholds 4 and 5 can be enormous, so outside personnel may keep trying to rescue someone whose death has already happened locally, or abandon someone who stays alive for several subjective minutes. That uncertainty is not a licence to decide arbitrarily; establish the thresholds and the current local time before play.
Redshift Carrion
Angular scavenger of damaged lapse fields
This profile is an adult attached to an active metric anchor. Away from an anchor, the Carrion loses its exotic powers, Movement drops to 4, and it starts taking 1 HP per minute as its projected anatomy desynchronizes. Roll each specimen or use the typical column.
| Characteristic | Roll | Typical |
|---|---|---|
| STR | 4D6+4 | 18 |
| CON | 4D6+6 | 20 |
| DEX | 3D6+2 | 12 |
| INT | 2D6+2 | 9 |
| POW | 4D6+4 | 18 |
| HP | (STR+CON)÷2 | 19 |
| WP | = POW | 18 |
Movement: 8 metres along equal-lapse surfaces; one mapped zone per turn radially. Skills: Alertness 70%, Athletics 50%, Navigate (Lapse) 90%, Stealth 70%, Unarmed Combat 60%, Unnatural 50%.
Armour: 3 points of layered blue tissue. Redshift Defense applies across zone boundaries.
vs Lethal Damage: RESILIENT when attacked across a lapse boundary; a successful Lethality roll does damage equal to the Lethality rating. NORMAL against attackers sharing its current zone, after gradient collapse, or when struck by Differential Shear.
SAN Loss: 0/1D6 to see the Carrion locally; 1/1D8 to watch its body occupy incompatible rates of time; 1/1D10 to communicate with a conscious victim being fed on across a severe lapse boundary.
Attacks
Carrion Mouth 60%, damage 1D10, Armour Piercing 3. The feeding structures open along a surface of equal lapse and remove tissue without crossing the intervening image. On a critical the target is pinned and feeding begins.
Anchor Limbs 50%, damage 1D8 or pin. Broad limbs fasten a target or object to the local accelerated frame. Escape needs an opposed STR test, a suitable cutting tool, or a successful attack doing at least 5 damage after Armour.
Killing-Energy Drain 60%, damage 1D6 HP and 1D4 WP, costs 2 WP. Requires a pinned target in Lapse 2 or deeper. The victim experiences cold, hypoxia, and rapid metabolic exhaustion, while external thermal instruments register less energy loss than the local injury needs.
Differential Shear 50%, Lethality 10%, costs 3 WP. It forces two parts of a target onto neighbouring lapse-supported trajectories. On a failed Lethality roll the target takes the sum of the dice and is pinned across the boundary. Carrion use this on rigid machinery and armed rescuers, not on food they want to keep.
Powers
Redshift Envelopment. Spend 3 WP and win an opposed POW test against a target touching the anchored zone; the boundary extends around the target and raises their Lapse Rating by one mapped band. The target is not teleported. Local space stays continuous while their stationary worldline changes. It cannot create a band deeper than the anchor currently supports.
Redshift Defense. Attacks from outside the Carrion’s current band use outdated positional information, so apply the cross-boundary penalties above. It gives no extra Armour against a locally marked inward attack, and the blueshifted damage bonus still applies.
Across Clocks. Its angular nervous system coordinates segments in different lapse bands, so it never loses actions just because the Mission Clock advances fast. Once per round it may move one limb or sensory structure in a neighbouring mapped band without moving its mouth.
Carrion Metabolism. After doing damage with Killing-Energy Drain or Carrion Mouth, recover 1D4 HP or 1D4 WP, never above its normal maximum. Feeding from a dead Hound projection restores both.
Signal Taste. It automatically detects calibrated pulses, synchronized clocks, active carrier compensation, and other systems mapping the lapse, and can follow those correlations along the gradient. It does not read message content.
Strengthen the Gradient. Once per scene, after feeding from angular tissue, spend 5 WP to raise one existing zone’s Lapse Rating to the next band, and move all Mission Clock events tied to that zone accordingly. Instruments show the change before it takes full effect, giving the characters one exchange to leave or interrupt the feeding.
Abandon the Carcass. If its anchor collapses, it may spend all remaining WP to follow the dying angular correlation through the nearest compatible discontinuity, escaping but leaving half its HP as blue residue. A Carrion with 0 WP has to stay and becomes normally mortal.
Countermeasures
Enter the local frame. The direct solution is often the ugliest: cross into the victim’s lapse zone and confront the Carrion locally. Its position becomes current, attacks resolve normally, and ordinary medical treatment works at ordinary local speed. Every rescuer who enters pays the same external-time cost.
Collapse the anchor. Remove or complete the underlying angular event. Destroying a Hound carcass may not work if that strengthens its scent or localization; the correct operation may be allowing the remains to delocalize, erasing the record holding them finite, discharging a false-vacuum defect, or detuning a Tunneller boundary. When the anchor collapses, all zones return toward Lapse 1 over one to three exchanges, and pinned characters face Differential Shear unless extraction systems guide them along the changing field.
Proper-time extraction. Map a continuous outward path with local clocks and bidirectional pulses, then move the victim one band at a time. Each step needs a successful rescue action and advances the Mission Clock by the current band; a failure leaves the victim in place, a fumble pins them across two bands. Do not tow the visible image; at severe redshift the image is delayed evidence of where the victim was, so follow local transponders and predicted worldline geometry.
Inward blueshift. A directed electromagnetic pulse can arrive with far greater local energy than its external command value suggests, and with a confirmed local target an inward attack can bypass Redshift Defense and become Lethal. The same pulse can cook the victim, detonate equipment, or feed the anchor, so the operation needs a local dosimeter or a model accurate enough to calculate the received energy in the destination frame.
Differential inversion. Reverse or rapidly flatten the lapse gradient while the Carrion spans several bands, and its projected segments acquire incompatible continuity conditions. This is Differential Shear against the Carrion at Lethality 20%, ignoring Armour and RESILIENT status. Failure harms every rigid object crossing the same bands. It is a containment method, not a selective spell.
Starve it. Separate the Carrion from angular residue and local free-energy sources: shut down active probes, evacuate warm bodies, isolate electrical systems, and let the existing carcass finish relaxing. A starved Carrion loses 1 WP per external Mission Clock threshold and eventually has to abandon the anchor or become finite.
Running split clocks fairly
Draw the Lapse Map: every zone and boundary exists before it matters tactically. Choose the reference clock and say whose time the Mission Clock represents. Publish the action costs, so once mapped the players know one exchange at Lapse 10 advances ten external ticks. Set events in advance, and do not move a sterilization order closer because the group is succeeding. Keep local agency, because characters act normally in their own band. Delay information, not decisions: give players enough physical evidence to choose even when their characters cannot talk across zones. Respect co-location, and let a rescuer who reaches the Carrion’s frame shoot it normally. Model direction: inward energy blueshifts and outward energy redshifts, and do not apply whichever version makes the attack fail. Do not call every delay relativity, because broken radios and dramatic silence are not lapse effects without clock or spectral evidence. And let extraction work: a mapped, properly instrumented rescue can recover the victim. Time dilation should make choices costly. It should not let the GM announce that thirty years passed because the scene needed a cruel ending.
Ecology
Redshift Carrion are the first strong evidence that Hound manifestation sites become temporary ecosystems after the Hound itself is gone. Corner Brood take the geometric defects. Vacuum Grazers work the altered field fluctuations. Carrion consume projected tissue and energetic imbalance along the damaged lapse. None of them needs to be related to the Hound; they arrive because a suffering angular body has deposited habitat into curved spacetime. This complicates extermination, because a Carrion colony may be the only thing keeping a Hound carcass from reconstructing: by consuming locally energetic tissue while exporting almost no recoverable external signal, the scavengers reduce the redundant records anchoring the remains, and kill them too early and the Hound’s scent rises. Let them feed, though, and they may deepen the lapse well until living witnesses become available carrion. The useful ecological question is which impossible process resumes when they stop eating.
Operations
Seventeen Minutes
Run the West Vale incident from the transcript. Doctor Sato is pinned at Lapse 50 beside a decomposing Hound projection. Vey starts outside with the rest of the Protagonists. The control team has three external days before the anchor becomes causally closed. The Carrion is genuinely reducing the Hound’s Scent, so killing it immediately raises the Scent Track by 2 and starts a Palimpsest reconstruction from the facility’s records. Extracting Sato without dealing with the carcass gives the Carrion another warm target: Vey. The team can save both humans, preserve the scavenger, and finish the Hound’s delocalization, but only by getting a one-bit extraction instruction across three days of worsening redshift.
Whale Fall
A Hound was destroyed under an urban hospital twenty years ago, and the sealed basement has only accumulated eleven hours of proper time. Carrion feeding there stopped further manifestations, and the administrators unknowingly built radiation therapy, MRI, backup power, and medical-gas systems around the field. Renovation opens the basement. The Carrion follow power and body heat upward while the Hound residue starts reconstructing below, and patients on synchronized monitors make easy lapse references. The Protagonists have to decide whether to restore the old ecosystem, remove the carcass safely, or evacuate a hospital whose lower floors run time at different rates.
The Longest Mayday
An observatory has received the same distress transmission from a missing spacecraft for nineteen years. The signal gets redder and slower but gains detail as new instruments improve, and analysts find a second periodic structure moving beside the speaker. For the astronaut, fourteen minutes have passed. A Carrion colony surrounds an angular drive failure that made a compact lapse well, the crew is alive locally, and every rescue trajectory computed from the old image arrives where the ship was years earlier in external coordinates. The mission means reconstructing the ship’s current worldline from the redshift evolution, sending one compressed inward instruction, and deciding whether firing the damaged drive collapses the envelope or completes the angular breach.
The Analogue Nursery
A Bose–Einstein condensate experiment creates a sonic horizon for phonons. It does not curve spacetime around the lab. It does reveal a Carrion larva occupying the effective horizon in the excitation field. The team celebrates the unprecedented biological-looking correlation and turns up the resolution. Angular contamination from an earlier Which-Way experiment lets the larva transfer the mode boundary into its projected body, and clocks beside the apparatus start disagreeing by microseconds, then seconds. Shutting down the condensate removes the template but may release the now-macroscopic larva. Maintaining the horizon gives it time to mature. The safest solution is changing the flow so the analogue boundary sweeps through the larva faster than its segments can stay angularly coordinated.
Return Shift
A response team enters a Lapse 10 zone under a government facility. Their operation needs twelve local hours, and command has assured them the external cost will be five days. The measured field is actually Lapse 50 and strengthening. The team comes out after twenty-eight months. The facility has changed contractors, the incident has been officially resolved, and the new security staff believe the team are hostile replicas. One Carrion escaped with them and has attached to the institutional gap between the old mission clock and the new one, feeding on an archived Hound specimen nobody now admits exists. The Protagonists have to prove their identity without reactivating the suppressed records anchoring the specimen.
The Mercy Feed
A Carrion colony has enveloped a conscious Palimpsest Hound whose reconstruction failed halfway. External observers see an almost motionless, injured creature. Locally it has endured weeks of being eaten and cannot delocalize while the records persist. The Carrion are consuming those records through the body, slowly reducing Reconstruction. Let them finish and the Hound escapes angularly and the colony starves. Destroy them and the fully localized Hound resumes killing investigators. Erase the records abruptly and the changing lapse may shear everyone in the chamber. Both creatures behave like wounded animals inside a machine humans built out of observation, whichever one the Protagonists happen to pity.
Field classification
REDSHIFT CARRION Type: angular scavenger of stationary lapse damage Habitat: failed Hound projections, false-vacuum scars, transition boundaries, analogue-horizon laboratories, strong-gravity environments Diet: local free energy and projected angular tissue Behaviour: anchoring, gradient extension, local consumption, destruction of lapse-mapping systems Primary sign: clock divergence together with redshifted biological activity Movement principle: one angular anatomy spanning several proper-time rates Containment principle: map the lapse, collapse or isolate the anchor, confront it locally Critical hazard: a living victim becoming energetically negligible to the rescue frame
Where the science ends
Gravitational time dilation is real. Gravitational redshift is real and experimentally measured. Proper time genuinely depends on worldline. In stationary spacetimes, conserved Killing energy genuinely differs from locally measured energy by lapse factors. Thermal equilibrium in gravity genuinely obeys Tolman-type redshift relations. Analogue-gravity systems genuinely reproduce horizon-like propagation for selected excitations. A distant observer does not get an immortal frozen image of an infaller at a horizon. A person beside a laboratory sonic horizon does not age at a different human-scale rate. Time dilation does not supply free energy. And a biological organism cannot hold a victim statically near a horizon, span incompatible proper accelerations, or export stress into “angular space.” The Tindalosian axiom supplies three impossible things: an angular continuity that can coordinate tissue across lapse zones, a metric anchor left by a failed projection, and a route through which the support stresses can be carried. Once those are granted, the redshift, signal delay, energy bookkeeping, equilibrium cautions, and rescue geometry follow as honestly as they can.
Technical notes
- R. V. Pound and G. A. Rebka Jr., “Apparent Weight of Photons”, Physical Review Letters 4 (1960). The landmark laboratory measurement of gravitational frequency shift using nuclear resonance.
- Richard C. Tolman and Paul Ehrenfest, “Temperature Equilibrium in a Static Gravitational Field”, Physical Review 36 (1930). Establishes the gravitational redshift of equilibrium temperature.
- Jessica Santiago and Matt Visser, “Tolman-like Temperature Gradients in Stationary Spacetimes”, Physical Review D 98 (2018). Extends and clarifies Tolman-style equilibrium relations in stationary settings.
- Oren Lahav et al., “Realization of a Sonic Black Hole Analog in a Bose–Einstein Condensate”, Physical Review Letters 105 (2010). An effective sonic horizon for excitations in a condensate without astrophysical gravity.
- Jeff Steinhauer, “Observation of Quantum Hawking Radiation and Its Entanglement in an Analogue Black Hole”, Nature Physics 12 (2016). An analogue-gravity result showing the physical richness, and strict scope, of effective horizons.
Last received signal
The control room replayed Sato’s final outward transmission for three days, because the carrier never stopped arriving. At full speed it was too low to recognize as speech. Corrected for the measured redshift, it lasted eleven seconds.
I am still alive. It has reached my spine. Stop discussing whether the image proves I am alive. Stop watching and come here.
Mission Control watched him die for three days. He experienced enough of it to beg them to stop watching.
