SCP-9954 - Paradoxum Apoapsis

Trace organic particulates detected. Uncontained biological anomaly detected in Module ██. Initiating atmospheric decompression cycle. Please stand by.

Item#: SCP-9954

Level4

Containment Class:

neutralized

Secondary Class:

{$secondary-class}

Disruption Class:

{$disruption-class}

Risk Class:

{$risk-class}

link to memo

SCP-9954, approximately two months prior to lunar impact with Phoebe.

Special Containment Procedures:

SCP-9954 was considered neutralized following the failure of Project TRYST. However, evidence suggests that at least some of its remains may persist on the surface of Saturn's moon, Phoebe. Thus, Foundation efforts should prioritize the restriction of interplanetary spaceflight to and from Phoebe, and an exclusion zone should be designated up to 15km around SCP-9954's impact crater. A temporary lunar research station, designated SCP-9954 Proximal Research Station (PRS-9954), should be established within the exclusion zone to facilitate the search for and study of SCP-9954 samples. Should such samples be discovered, they will remain at the established Phoebe research station for an interim storage period before being transported off-site for further research at a dedicated Foundation facility on Earth.

Description:

SCP-9954 was initially determined to be a centaur displaying characteristics of both an asteroid and a comet, but was producing a coma and an infant bow shock at the time of its discovery and was thus classified as an interstellar rogue comet, 54X/2286 K1 (Lily). Spectrographic analysis revealed that SCP-9954's nucleus exhibited an unremarkable composition, containing an amalgamation of rock, dust, water ice, frozen carbon dioxide, carbon monoxide, methane, ammonia, and a variety of organic compounds, such as methanol, hydrogen cyanide, formaldehyde, ethanol, ethane, and various hydrocarbons and amino acids. However, the overwhelming, uncharacteristic prevalence of these organic compounds, far exceeding levels on 99.997% of similar small Solar System objects, implies the building blocks of DNA and RNA, especially nucleotides such as adenine and guanine, likely formed on its surface, potentially allowing for complex prebiotic evolution.

While SCP-9954 was otherwise non-anomalous in nature, it was observed not to be confined to or impacted by gravitational forces. Its trajectory was static and rectilinear — strictly one-dimensional, defying known laws of motion and gravitation, suggesting an unknown force fueled its anomalous movement. SCP-9954 traveled with a relatively low velocity as it entered the outer solar system, and was estimated to reach a non-orbiting perihelion within 56 years, and was expected to exit the solar system within 112 years of its discovery.

Addendum SCP-9954-1: Project TRYST

SCP-9954's impact crater with a diameter of 27km. The wreckage of the ACRSS was identified approximately 3.7km west of the crater.

The Foundation prioritized SCP-9954 research due to its potential insight into the origins of organic life and to uncover the unidentified force behind its anomalous movement. Project TRYST was later established with the intent to intercept and sample SCP-9954 as it reached non-orbiting periapsis of Phoebe in 2302. In 2288, the construction of the Advanced Comet Research and Sampling Station (ACRSS) began in orbit above Phoebe. Simultaneously, the Artificial Intelligence Applications Division (AIAD) began development on a Class-IV General Intelligence Artificially Intelligent Conscript (.aic), Sequitur.aic, to assist in the management of the ACRSS's Computer Command and Data Handling subsystem (CCDHS). Sequitur.aic's early trial results promised above-average efficiency and unprecedented accuracy in its problem-solving, decision-making, adaptability, and learning-ability, and, in 2298, Sequitur.aic was fully deployed to the completed ACRSS, making it humanity's first .aic-supported orbital research station. The ACRSS was fully operational by 2300 and was staffed by more than 75 individuals sourced from Foundation sites on both Earth and Mars.

On March 5th, 2302, SCP-9954 made its approach on Phoebe. The station would, with the support of Sequitur.aic, move into position to intercept the comet, matching its velocity and vector, traveling parallel to it for several days to facilitate the retrieval of several samples. However, on March 10th, 2302, Mars Orbital Site-054 intercepted a high-priority distress signal originating from the ACRSS's calculated orbital intercept vector. While Sequitur.aic should have been able to calculate the intercept flawlessly, SCP-9954 ultimately collided with the ACRSS. The station suffered catastrophic damage and was sent, with SCP-9954, careening to the surface of Phoebe.

It was presumed that SCP-9954 had disintegrated upon impact and that no Foundation personnel within the ACRSS had survived. All project assets were considered lost, and Project TRYST was deemed a failure. The Foundation Internal Review Committee (IRC) opened an investigation of the AIAD to determine the cause of the collision, in which the IT Department's Director, Hange Roa, denied all responsibility, citing Sequitur.aic's assessments and trials to certify its functionality and operability.

Subject:

On the Implication of the AIAD in the ACRSS Incident

Sequitur.aic only builds upon its predecessors, outperforming the very foundations it was built upon. 200 simulated mission control scenarios with zero errors. 25 pre-deployment trials where perfect operational efficiency was maintained across all subsystems, where complex, multi-step protocols were executed with unparalleled precision. Throughout its 10-year development lifecycle, dozens of external auditors within the IRC itself have attested to its accuracy. Hell, even Dr. Cross, Chief Engineer of the ACRSS, testified that Sequitur.aic's fault tolerance was unprecedented. Sequitur has proven to us time and time again that it is simply incapable of making mistakes.

Alexander Pope in the 1700s famously said, "To err is human," not algorithmic. If a mistake was made, it was made by a human. The final clause of that quote is "To forgive, divine." The Foundation will have to find within itself the power to forgive whoever caused such a tragic loss of life, but Sequitur is not to blame.

Hange Roa,
Director
IT Department

Due to widespread corruption of ACRSS CCDHS logs and records following the collision, a multi-source reconstruction of events was conducted, and a timeline was assembled with 92% confidence, which meets IRC's tolerable margin of error.

Addendum SCP-9954-2: ACRSS Incident Reconstruction - Section A

Section A - Initial Survivor Contact

Timestamp: +02h Post-Impact
Summary: Mars Orbital Site-054 intercepted yet another high-priority distress signal originating from the surface of Phoebe at the ACRSS's approximated crash-site.

High-Priority Distress Signal:

Transmission ID: ACRSS-9436
Wells, L:
This is junior aerospace engineer Lydia Wells transmitting from the crash site of the ACRSS on Phoebe, requesting the immediate deployment of a Foundation search and rescue team. I'm currently locked in ACRSS Module 17, the location of the communications subsystem hub. I'm alone, but luckily it's still functional. Sequitur has initiated a station-wide lockdown across the surviving sectors to prevent depressurization, and unless the lockdown is lifted, I am the only one with access to the communications subsystem. I'm uncertain of the status of other members of the crew due to my isolation, but I doubt that I'm the only one left. Please send help.

SCiPNET Email - One (1) sent message.

Timestamp: 726h Pre-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: RE: RE: I miss you!
You've asked for the flight manifest four times, and I told you I can't give that to you. It's against Foundation protocol. I love and miss you, Cass, but please let me get back to work.

SCiPNET Email - One (1) sent message.

Timestamp: 456h Pre-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: RE: RE: Long time no see
No, I haven't made any friends yet. Jen and Lars invited me to join them for dinner, but I had to finish six hours' worth of navigational subsystem diagnostics, so I declined.

It's not really a problem, though. Yeah, it's a four-year contract, but I want to keep my relationship with the crew as professional as possible. I don't want to get tied down.

SCiPNET Email - One (1) deleted draft.

Timestamp: 120h Pre-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: I just need space
Cass, I can't keep doing this. I need to focus on what's in front of me without you breathing down my neck about every possible safety hazard you can think of. I'll be fine. Please relax.

Addendum SCP-9954-3: ACRSS Incident Reconstruction - Section B

Section B - System Degradation

Timestamp: +04h to +30h Post-Impact
Summary: Approximately two hours after Wells' initial contact was successfully intercepted, partial subsystem diagnostics and individual module logs were transmitted from the CCDHS to Mars Orbital Site-054 by Sequitur.aic. The received data indicated several subsystem failures throughout the ACRSS and Sequitur.aic's activation of several decompression cycles in various isolated modules. Sequitur.aic's motive for enacting these decompression events is not yet understood.

Sequitur.aic Subsystem Diagnostic Logs:

Timestamp: +04h Post-Impact

> Module 17 life support status off-nominal. Oxygen levels deviating from acceptable variance. Recommendation: Immediate Assessment and Intervention.

Timestamp: +19h Post-Impact

> Module 17 life support status nominal. Oxygen levels within acceptable variance.

Recovered PDA Data:

Timestamp: +20h Post-Impact

Work Log - Wells, L
Duration: 16h 15m
Notes: Approximately 16 hours prior to this report, it was brought to my attention by Sequitur that there was an issue with the life support subsystem. The centrifuge that separates Module 17's water supply into hydrogen and oxygen wasn't performing at maximum efficiency. If left undiagnosed, this issue would have led to oxygen deprivation.

Hopefully, the other modules aren't experiencing similar failures. There are a lot of good people on this station…

I was lucky to get it done. If this were something I had to do back home, I probably never would have finished. God knows, I'd have been dragged away from work before I was able to get even halfway done. I'm going to take a rest for a while. I'm not sure that'll help my headache, though. I should probably down some water and have a bite to eat, now that I think about it… Probably should have been thinking about it hours ago.

SCiPNET Email - One (1) deleted draft:

Timestamp: +20h Post-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: Guess What I Fixed

Hey, it's been a while. Things aren't looking too great up here. Turns out, space isn't all that it was cracked up to be. Who would have guessed? On the bright side, all that hard work I put into that engineering trade school paid off! I spent the last 16 hours working on this project, and now I'm completely exhausted.

Be sure to feed Maven for me, okay? I'm sure she's gotten used to me being gone by now, but I still hold out hope that she'll remember me when I get back.

Sequitur.aic Module Diagnostic Logs:

Timestamp: +24h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 02. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 3
> Status: Deceased

Timestamp: +26h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 06. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 1
> Status: Deceased

Timestamp: +29h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 03.
> …
> Attempting manual override. Please enter credentials.
> Username: ACRSS.LWells
> Password: ********
> ERROR: Insufficient credentials.
> …
> Attempting privilege escalation. Biometric authentication required.
> Initiating retinal scan…
> ERROR: Insufficient credentials.
> …
> Attempting manual override. Please enter credentials.
> Username: ACRSS.LWells
> Password: ********
> ERROR: Insufficient credentials.
> …
> (Expand 175 hidden lines)
> …
> ERROR: Insufficient credentials provided.
> Locking command interface. Further input disabled.
> Emergency sequence activated: acrss/sequitur.aic/forced-override
> ERROR: Command interface locked. Further input disabled.
> …
> (Expand 225 hidden lines)
> …
> please stop
> ERROR: 'please stop' is not recognized as an internal or external command or operable program.
> …
> Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 5
> Status: Deceased

PDA Crash Log and Diagnostic Data:

Timestamp: +29h Post-Impact

> FETCH_DIAGNOSTICS
> Analyzing kinetic sensor data…
CRITICAL | G-Sensor: Acceleration exceeds 14.0G (X-AXIS)
WARNING | Gyro: Rotational Velocity Peak detected (1440deg/sec)
> Analyzing hardware status…
ERROR | MEM_BUS_01: Signal loss. Data corrupted.
ERROR | CMOS_CAMERA_MODULE: Device not found.
ERROR | PMIC: Voltage instability in LI-ION-CELL_01
ERROR | THERMAL_ZONE_O2: Temperature instability (105C)
> Event ID 4111/4120: Critical Thermal Event detected. Shutting down.

According to the logged timestamps in the above diagnostic report, it was concluded that the PDA suffered catastrophic damage during an unidentified impact event. It should be noted that further communications from Lydia Wells were conducted without the use of the PDA.

High-Priority Distress Signal:

Timestamp: +30h Post-Impact

Transmission ID: ACRSS-9444
Wells, L:
This is junior aerospace engineer Lydia Wells, transmitting from Module 17 of the damaged ACRSS on Phoebe. For better or worse, no camera this time.

(A series of coughs interrupts the recording.)

It's been approximately 28 hours since my last transmission, and I have not received a response. I am, once again, requesting the immediate deployment of a Foundation search and rescue team. Matters on the ACRSS are devolving. I'm currently working to repair a malfunctioning life-support subsystem in my module, but Sequitur has enacted some protocol and is initiating decompression cycles in the neighboring modules, one by one. I'm not sure what order it's following, but so far, Module 02, 06, and, just now, Module 03 have been decompressed. I've attempted to manually override whatever ordinance Sequitur is following, but I was not successful.

There were people in those cabins. Please, send help. I didn't sign up for this. Please. I want to go home.

Addendum SCP-9954-4: ACRSS Incident Reconstruction - Section C

Section C - Catastrophic System Failure

Timestamp: +30h to +68h Post-Impact
Summary: Over the course of the next four days following the ACRSS's collision with SCP-9954, Sequitur.aic transmitted several more subsystem diagnostic and module logs from the ACRSS CCDHS to Mars Orbital Site-054, notably the degradation of the life support subsystem in Module-17. Additionally, Lydia Wells continued to transmit high-priority distress signals, which were intercepted by orbital site staff. A vote to authorize mission retrieval protocols and to organize a search and rescue team was brought before Project TRYST leads, but was denied unanimously due to exorbitant costs and minimal return on investment. Orbital site staff were instructed to continue to observe the progression of the ACRSS situation, but not to intervene.

SCiPNET Email - Three (3) deleted drafts.

Timestamp: +30h Post-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: You pushed me away
I felt suffocated. I couldn't breathe without you making sure the air quality was acceptable. I just wanted to get away. I get that you were just caring for me in your own way, but why couldn't you take a hint?

This isn't your fault. I know that. I shouldn't blame you. I just needed some time to figure things out. To really understand what I was feeling.

Sequitur.aic Module Diagnostic Logs:

Timestamp: +34h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 09. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 2
> Status: Deceased

Timestamp: +34h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 12. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 4
> Status: Deceased

Timestamp: +34h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 14. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 3
> Status: Deceased

Timestamp: +34h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 04. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 12
> Status: Deceased

SCiPNET Email - One (1) deleted message.

Timestamp: +35h Post-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: I don't want to be alone anymore
Cass, I know you're probably confused. You might not even know what's going on. I didn't offer you any explanation. I just ran away. That's all I could think of doing. Just… running.

I thought it would be better this way. But I get it. I was wrong. This isn't how I thought it would be. I miss you, Cass. I would do anything to take it all back.

High-Priority Distress Signal:

Timestamp: +37h Post-Impact

Transmission ID: ACRSS-9454
Wells, L:
This is junior aerospace engineer Lydia Wells.

(Wells is panting, and her voice is hoarse.)

I've reviewed Sequitur's personnel status dashboard. Out of the ACRSS's 18 modules, almost half have been decompressed. More than twenty of us have died. More than twenty people with families and loved ones back home who will never see them again.

And you don't care at all.

We dedicate our lives to you, put our unwavering trust in you, and all you do is chew us up and spit us out as soon as the flavor goes stale.

I know you're listening. I know you're sitting pretty behind a monitor, tuning me out by just removing your headset and setting it aside. Maybe you even muted the feed so you don't have to hear us crying out for help.

This crew depended on me to reach out to you to save us. I tried. I really tried.

My life… These lives.

(Well's finger can be heard tapping on the recording device.)

They're on you.

Sequitur.aic Subsystem Diagnostic Logs:

Timestamp: +38h Post-Impact

> WARNING: Module 17 O2 supply at 15%. Immediate attention is advised.

SCiPNET Email - One (1) undeliverable message.

Timestamp: +48h Post-Impact

To: ten.pics|ydissac.ear#ten.pics|ydissac.ear
From: ten.ssrca.pics|aidyl.sllew#ten.ssrca.pics|aidyl.sllew
Subject: I'm sorry
I should have been honest with you. I shouldn't have run away from my problems. Our problems. I realize that now. I should have just… spoken to you! About all of it! That would have made things so much easier, but instead, I decided to put as much distance between you and me as possible. I kept smiling through the pain. I should have just said that it hurt. That something was wrong. But by saying that, I felt like something between us was going to break, and that scared me more than anything. So I hid myself away.

NOTICE: Outbound communication flagged and withheld pending review.

Autobiometric Scan Analysis:

Timestamp: +54h Post-Impact

> Subject: Wells, Lydia
> Results:
> Heart Rate | Elevated, 120 bpm
> Oxygen Saturation | 65%
> Blood Pressure | Elevated, 160/100 mmHg
> Body Temperature | 39.5C
> Symptoms | Fatigue, dizziness, cough, nausea, fever, jaundice, tachycardia, hypertension, hypoxemia

Sequitur.aic Module Diagnostic Logs:

Timestamp: +55h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 05. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 2
> Status: Deceased

Timestamp: +58h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 11. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 2
> Status: Deceased

Timestamp: +62h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 01. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 1
> Status: Deceased

Timestamp: +67h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 16. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 3
> Status: Deceased

High-Priority Distress Signal:

Timestamp: +68h Post-Impact

Transmission ID: ACRSS-9461
Wells, L:
Don't worry. I'm not here to beg you to save me. Not anymore.

I just want to ask a favor. My email isn't working. Please, deliver this message to Cass. She needs to hear it…

I'm sorry, Cass. I pushed you away. I took an assignment that would take me 1.6 billion kilometers away from you. I thought it would be for just four years, but… well, that didn't turn out the way either of us expected.

(The audio peaks as Wells chokes on a wet, prolonged cough. Wells' speech is slow and labored. She is frequently gasping for air.)

I just want you to know that it wasn't your fault. It was mine. Six years together, and I still have never learned to talk to you about my problems. This is what I get. Just know… you're not losing anything by losing me.

Maybe that's selfish of me to say, but you deserve better than what I have to offer. And at the same time… I don't want you to think that of me. Pathetic, right?

You're not a mindreader. I know that. So, instead of making you read my mind, I thought I'd clarify for you. I was overwhelmed. And I was begging for space without actually asking for it. A part of me thought that telling you how I felt would destroy what we had built together. So, instead, I ran as far away as I could from my problems. I should have just told you what I was feeling, because I know you love me. All you've ever done is show me how much you love me. You never would have let something so small become so big. But I hid it from you.

(After another moment of silence, Wells continues, her breathing and speech steadier than before.)

I know after everything, I have no right to ask favors of you. But, please, check on me one more time. I'm coming home. Not right away, but soon. They're going to send a team. It might take a little while, but I'll be on that shuttle. Please, Cass, be there for me one more time. I won't push you away. I won't run and hide. I just want you there with me. Not stuck worrying from a distance. I can't imagine anything better than just clinging to you. I want to see your beautiful face. I want to hear your sweet voice. I want you close.

I'm sorry, Cass — for everything. I miss you. I miss you scolding me for working for hours on end. I miss you dropping a dinner plate onto my desk when I forgot to eat, and you would wrap your arms around my neck from behind. When you did those things for me, I'd often forget everything I was working on. I miss the warmth of your skin and the softness of your hair. That honeysuckle shampoo you always use.

Cass, I—

The distress signal is cut short and is immediately followed by a transmitted module diagnostic log from Sequitur.aic.

Sequitur.aic Module Diagnostic Logs:

Timestamp: +68h Post-Impact

> Trace organic particulates detected. Uncontained biological anomaly detected in Module 17. Initiating atmospheric decompression cycle. Please stand by.
> …
> Atmospheric decompression cycle complete.
> Occupants: 1
> Status: Deceased

Addendum SCP-9954-5: ACRSS Incident Reconstruction - Section D

Section D - ACRSS Communication Re-Established

Timestamp: +120h to +750h Post-Impact
Summary: Following the interception of the high-priority distress signal 68 hours post-impact and Sequitur's Module 17 diagnostic log, a single transmission was received, indicating that Module 17's O2 supply was depleted. No further communications were transmitted from the ACRSS CCDHS. After a period of dead air that persisted for more than 48 hours, Mars Orbital Site-054 observational staff concluded that any remaining survivors had since expired. As per standard operational protocol, all dedicated communication channels with the ACRSS remained open for the full duration of the 168-hour mandatory signal retention window. Approximately 120 hours post-impact, communication with the ACRSS was unexpectedly re-established, and Mars Orbital Site-054 received another high-priority distress signal originating from Module 17.

High-Priority Distress Signal:

Timestamp: +120h Post-Impact

Transmission ID: ACRSS-9455
Wells, L:
(There is a five-minute period of silence before Wells begins to speak.)

This is junior aerospace engineer Lydia Wells.

I know it has been quite some time… But I'm still here. Sequitur let me know that the station's O2 supply ran out a long time ago, but it's… not really an issue anymore. I found something. Seems to be a fragment of SCP-9954. It's helping.

(Another pause interrupts the transmission. The silence is broken by Lydia stifling a cough. Her speech is slightly slurred.)

I don't think I'll be able to make it much longer, though. I can at least keep it safe until you arrive. I'm certain that its abilities are of interest to the Foundation. If you're coming, send a small recovery team. Preferably .aic engineers. You can't risk Sequitur malfunctioning further and harming the team.

Please come soon.

Multiple attempts were made to respond to the distress signal. None were successful.

Project TRYST Voting Record - Authorization of Mission Retrieval Protocols

Timestamp: +124h Post-Impact
Summary: Following Lydia Wells' final transmission, a vote was once again brought before Project TRYST leads to authorize mission retrieval protocols. Search and rescue was not included in the proposal. The record of the vote tally is attached:

YEA

NAY

ABSTAIN

STATUS

APPROVED

Due to its calculated trajectory, velocity, and the size of its impact crater, SCP-9954 had previously been assumed to have vaporized entirely upon impact with Phoebe's surface. Wells' testimony was considered anecdotal evidence of the existence of an SCP-9954 sample. However, Project TRYST staff determined that it was highly unlikely that Wells could have survived both the depressurization of Module 17 and the lack of a functional life support subsystem without the utilization of anomalous means. 72 hours after the mission retrieval protocols were authorized, a retrieval team was organized and launched for Phoebe, with arrival in orbit estimated within 30 days of takeoff.

Addendum SCP-9954-6: ACRSS Incident Reconstruction - Section E

Section E - Project TRYST Asset Recovery

Timestamp: +920h to +934h Post-Impact
Summary: The retrieval team entered Phoebe's orbit on schedule and descended to the surface of the moon, arriving at the ACRSS crash-site nearly four hours later. It should be noted that, at this point, no further communications had been received from Lydia Wells or Sequitur.aic. Despite radio silence for more than 30 consecutive days, Project TRYST asset recovery was to continue as planned.

ACRSS Exterior Survey:

Timestamp: +920h Post-Impact

Report: Visual confirmation of the ACRSS wreckage. The exterior hull exhibits signs of catastrophic damage to several modules, resulting from both a collision with SCP-9954 and an impact with Phoebe. A total of 34 bodies were identified outside numerous module airlocks. Observed bodies exhibit abnormal discoloration inconsistent with vacuum exposure. Patterns consistent with foot traffic are visible in the surrounding regolith, extending between airlocks and away from the wreckage: irregular stride lengths, inconsistent depths, overlapping and partial prints. Thermal imaging indicates active heat signatures on Phoebe's surface, branching away from the ACRSS in a lattice-like formation. Source remains unidentified.

ACRSS Interior Survey:

Timestamp: +921h Post-Impact

Report: Interior access achieved via Module 01. Auxiliary power remains active in limited capacity. Primary systems offline. While Sequitur.aic's logic core did sustain minor damage in the collision with SCP-9954, it should be noted that the logic core exhibits additional localized damage inconsistent with calculated impact vectors from the ACRSS-SCP-9954 collision event. Instead, evidence suggests intentional tampering post-impact, resulting in the total shutdown of Sequitur.aic subsystems. Data recovery achieved. Transmitting to Mars Orbital Site-054.

All 18 of the ACRSS modules show signs of rapid decompression. Life support subsystems nonfunctional. No survivors were identified.

Unlike other ejected survivors, Lydia Wells was discovered within Module 17, deceased. Discoloration of tissue consistent with other survivors. Did not seem to possess any SCP-9954 sample. PDA discovered intact, albeit damaged, in her possession. It appears repairs were made to the device, as a toolkit and various electrical components were located adjacent to Wells' body. Internal storage contained corrupted audiovisual data and partially overwritten personal correspondence addressed to her partner, Cassidy Rae.

Lydia Wells' PDA upon its recovery. The screen was cracked, and a slideshow of personal media files was playing on loop, including the above image of Lydia Wells and her partner.

SCP-9954 Impact Crater:

Timestamp: +934h Post-Impact

Report: Thermal imaging indicates active heat signatures in the surrounding regolith, not dissimilar from those found at the ACRSS crash site, extending from the center outward. Source remains unidentifiable. Surface sample retrieved for further analysis. The crater's diameter is approximately 27km — too large for the recovery team to survey completely. Establishing a temporary exclusion zone and ground station is recommended to facilitate further SCP-9954 sample search and retrieval.

Sequitur.aic Data Recovery - Navigational Subsystem Log:

> ERROR: Navigational anomaly detected.
> SCP-9954 deviating from expected trajectories.
> ACRSS time to intercept: 00:01:16
> …
> Attempting course correction.
> ERROR: Navigational anomaly detected.
> SCP-9954 deviating from expected trajectories.
> ACRSS time to intercept: 00:00:47
> …
> Attempting course correction.
> ERROR: Navigational anomaly detected.
> SCP-9954 deviating from expected trajectories.
> ACRSS time to intercept: 00:00:15
> …
> Attempting course correction.
> ERROR: No valid trajectory found.
> WARNING: Collision imminent.

Sequitur.aic Data Recovery - Personnel Log:

Sequitur.aic Data Recovery - Communication Log:

> Transmission ID: ACRSS-9436
> Transmission Type: High-Priority Distress Signal
> Status: Delivered
> …
> Transmission ID: ACRSS-9444
> Transmission Type: High-Priority Distress Signal
> Status: Delivered
> …
> Transmission ID: ACRSS-9454
> Transmission Type: High-Priority Distress Signal
> Status: Delivered
> …
> Transmission ID: ACRSS-9455
> Transmission Type: High-Priority Distress Signal
> Status: Undeliverable
> Retrying…
> Retrying…
> Retrying…
> …
> Transmission ID: ACRSS-9461
> Transmission Type: High-Priority Distress Signal
> Status: Delivered
> …
> Transmission ID: ACRSS-9455
> Transmission Type: High-Priority Distress Signal
> Status: Delivered

Addendum SCP-9954-7: Post-Recovery Biological Assessment

Preliminary examination of recovered regolith samples confirmed the presence of a previously unidentified extremophilic microorganism capable of sustaining metabolic function in the absence of atmospheric oxygen, sustained vacuum exposure, and extreme thermal conditions exceeding previously documented biological tolerance thresholds. Isotopic analysis and organic residue profiling indicate a composition broadly consistent with material detected within SCP-9954’s nucleus, suggesting a shared origin.

Current observations indicate a marked increase in cellular activity in samples exposed to high-energy shock events consistent with SCP-9954’s impact with the ACRSS, though causality has not been established.

Morphological and genetic analysis indicate no known terrestrial or Solar System analogues. In accordance with standard designation protocol for unidentified extraterrestrial biological agents, the organism has been assigned the provisional classification SCP-████.

Parallel analysis of SCP-████ samples is currently ongoing at the newly established PRS-9954 and at Mars Orbital Site-054.

Addendum SCP-9954-8: Extrasolar Orbital Survey

Orbital Site-054's deep-space tracking arrays identified a small Solar System body breaking through the Oort cloud, designated 6X/2305 S1 (Rae). While spectral resolution remains insufficient for full compositional matching, preliminary analysis indicated photometric similarity to previously catalogued cometary data, particularly regarding particulate dispersion under solar stress.

Of particular note is the object's rectilinear trajectory.

Kinetic modeling suggests a persistent, linear vector unaffected by all known measurable perturbative forces from nearby stellar and planetary masses. This behavior is consistent with prior reconstruction models applied retroactively to SCP-9954 during pre-impact orbital assessments.

With its current trajectory and velocity, comet 6X/2305 S1 is projected to enter Mars' atmosphere in approximately 12 years. However, consistent acceleration persists outside modeled variance, increasing as heliocentric distance decreases. Thus, confidence in long-range projection remains below acceptable predictive thresholds.

Further comparative analysis between SCP-9954 and comet 6X/2305 S1 is ongoing. It is currently undetermined whether SCP-9954 represents an isolated instance or a segment within a larger, uncharacterized population of similarly behaving objects.