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How I Prompted This Hard Sci-Fi Story with ChatGPT 4.5

17/9/2025

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One night I was experimenting with ChatGPT to see if I could prompt a hard sci-fi short story that was constrained in a similar manner to Alastair Reynold’s ‘Revelation Space’ Universe. That means no FTL (Faster Than Light) travel, decades-long journeys, and scientific details that would hold up under scrutiny. I used GPT-4.5 for this task and started the process with ChatGPT’s deep research feature on nearby stars, exoplanets, and other scientific details for the story.

My Approach

  • Constraints First: I told the model to keep it hard science (real exoplanets, real stars, and relativistic flight only), include a shipboard AI that plays a key role throughout the story, and structure the narrative so it includes three mini-chapters (Earth Departure → Proxima Centauri → Next Best Star System).
  • Deep Research: I utilized deep research to gather and evaluate scientific facts for the story. Exoplanets featured include:
    • Proxima b (~1.07 M⊕, ~0.048–0.05 AU, ~11.2-day orbit, likely tidally locked; harsh flare environment).
    • Ross 128 b (~1.3–1.4 M⊕, ~0.049 AU, ~9.9-day orbit) orbiting a quieter red dwarf—better odds for a stable atmosphere and retained biosignatures.
  • Realistic First Contact: I found the first draft of Chapter 3 very unrealistic as the AI was able to instantly act as a translator for the extraterrestrials, so I prompted ChatGPT to revise Chapter 3 so the crew and AI had to gather a real corpus of signals and behaviours before meaning emerged. On the cloud-shrouded world (permanent overcast), “never seeing the stars” became both biologically and culturally coherent.

​Why Use An LLM For Hard Sci-Fi?

​GPT-4.5 handled style and cohesion while I provided the outline, anchored the physics, and directed the story. The model synthesized tone, pacing, and scene transitions, while deep research grounded the numbers, orbits, stellar behaviour, and environments. That split kept the story tight and credible.

Pattern Recognition, Language, And New Environments

The translation arc I wanted in the story mirrors how real understanding grows:
  • Data Before Meaning: You don’t decode a language from one utterance; you need hours of audio, context, and interaction.
  • Multimodal Grounding: Sound plus behaviour plus setting beats raw text or speech alone.
  • Probabilities, Not Certainties: Hypotheses get proposed, tested, and revised—exactly how good science (and careful field linguistics) works.

AI Is Already Accelerating Science

This workflow reflects where AI is useful today:
  • Astronomy: Classifying light curves, denoising spectra, flagging exoplanet candidates, modeling stellar flares.
  • Planetary Science: Terrain mapping, autonomous navigation, onboard triage for what to study next.
  • Signal Analysis/SETI-Adjacent: Anomaly detection and structured-signal characterization.

​Read The Story

​If you’d like to see the finished product of this experiment, you can read the full three-chapter short story here:
Interstellar Odyssey (PDF)
File Size: 219 kb
File Type: pdf
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The story follows humanity’s first interstellar voyage—beginning with Earth’s departure, continuing through the Proxima Centauri system, and culminating in first contact on Ross 128 b.
Picture
​​Image generated with ChatGPT. 

​Takeaways

If you want to prompt great stories with ChatGPT:
  • Start with clear constraints.
  • Utilize verified data. 
  • Let the model handle cohesion and voice. 
  • Keep a human in the loop for truth and taste. 
The result is fiction that reads smoothly but leans on real numbers—a voyage carried by patience, pattern recognition, and the quiet partnership between humans and their machines.
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Spruce Woods Star Party 2025: Clouds, Stars, and Community

3/9/2025

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From Friday, August 22nd to Sunday, August 24th, I joined fellow Royal Astronomical Society of Canada (RASC) Winnipeg Centre members for our annual Spruce Woods Star Party. The weather wasn’t always in our favour, but the weekend still had plenty of memorable moments, camaraderie, and glimpses of the night sky that remind me why I love star parties so much.
Picture
Star Party Community Tent

Friday, August 22nd – Arrival and Clouds

​I arrived just over a half hour after sunset with just enough light left to set up the tent and inflate the air mattress (non-red lights are banned at night at star parties to protect night vision). The difference between Spruce Woods and city skies was immediately apparent when the clouds mostly cleared after camp setup was complete. The stars and constellations popped against the darker backdrop, far beyond what I normally see in Winnipeg or even at Bird’s Hill Provincial Park, which is still very much affected by light pollution from nearby Winnipeg.
​But as quickly as the stars appeared, the clouds rolled in and stayed for the rest of the night. I woke up a couple times hoping for a clearing, but clear skies never came. The thick clouds stuck through the morning, with the first hint of sunlight breaking through around 9:30-10am the next day.
At least I had something to keep me engaged through the long, cloudy night: A lineup of excellent ‘Astrum Space’ astronomy podcasts (Apple Podcasts, YouTube Catalogue), always a great companion when the sky doesn’t cooperate (and before falling asleep on typical nights).
Star Party Campsite

Saturday, August 23rd – Activities, Tours, and Observing

​The morning began with optimism. I set up my SeeStar S50 to observe the sun peeking through a patch of sky—only for the clouds to move back in almost immediately. I packed it away and switched gears for a refreshing bike ride on campground trails. Kiche Manitou Campground has an amazing collection of paths connecting virtually all areas of the campground. Cycling or hiking the trails is the best way to get around. 
Campground Trails
​Later came the swap meet, always a highlight. This year it was hosted by one of our members dressed as a pirate, making this amateur astronomer buy-and-sell even more fun.
Picture
Swap Meet Table
Picture
Swap Meet Pirate
​Sadly, I missed this year’s telescope tour, but I believe it was brief. Coming back from the showers around 7:20pm, I overheard someone loudly say, “And that concludes the telescope tour”, or something to that effect. If true, that’s far shorter than the 1–2 hours of previous years. However it makes sense as not many scopes were set up due to the poor sky conditions. 
​Later that night we got lucky, with the clouds breaking a bit for Gerry’s famous binocular tour. His tours are always a favourite of mine–packed with inspiration, facts, and cosmic perspective. He pointed out where Voyager 1 is located in our sky (the constellation Ophiuchus) and how far away it is (around one light-day from Earth). It’s one of the fastest human-made objects, yet would take thousands of years to reach Proxima Centauri (and that’s only if it were headed that way). He also showed how clusters of stars can appear spread across the sky because our solar system is drifting through them. We explored constellations and asterisms like Sagitta and the Coathanger within the Summer Triangle. That was just a taste of Gerry’s amazing tour. You’ll have to attend yourself for the full experience. ;)
​I’m seriously considering purchasing image-stabilized binoculars for next year (and to enhance my astronomy gear kit). I held back from purchasing them this time, but tours like Gerry’s really highlight their value. Too bad my not purchasing those binoculars didn’t help us get better weather (I’m referencing that amateur astronomer superstition/joke: Buy a new telescope, pair of binoculars, or desirable new astronomy gear, and the weather is guaranteed to turn on you—sometimes for quite a while). 
​After the tour, I turned to my own gear. With my Celestron Regal M2 100mm ED spotting scope, I revisited some favourites: The Double Cluster in Perseus, the shimmering Pleiades, and the always-magnificent Saturn with its iconic rings.
My SeeStar S50 also came back out, this time targeting deep-sky objects. I managed to image:
  • M103 (Open Cluster)
  • NGC 6888 (Crescent Nebula)
  • SH 2-142 (Wizard Nebula)
  • IC 63 (Ghost of Cassiopeia)
  • NGC 281 (Pacman Nebula)
  • NGC 6946 (Fireworks Galaxy)
SeeStar's Object Information & My Images (Saturday Night/Sunday Morning)
​One of the SeeStar’s best qualities is that I can monitor it remotely from inside my tent—perfect for nights like this when the chill sinks in. I drifted in and out of sleep, waking up to switch targets before crawling back into my sleeping bag.
​By 4 am, I stepped outside one last time to pack everything up. Dew was everywhere (hooray for the anti-dew feature on my SeeStar S50 (Note: It runs the battery down faster)), but seeing Orion rising in the east alongside Taurus the Bull and the Pleiades, then turning to see the rest of the night sky, just filled me with awe and delight.

Sunday, August 24th – Breakfast, Raffle, and Farewell

​Sunday morning brought one of the most beloved traditions of the Star Party: The community breakfast. Plates were piled with sausages, pancakes, eggs, fruit, and hash browns (the latter disappearing especially quickly).
Picture
Members hard at work cooking breakfast. 
​Then came the raffle. I walked away with a new toque and a screen/lens cleaning kit—useful prizes for future observing sessions and of particular note after the cold and dew this weekend. Afterward, we posed for a group photograph before packing up camp and heading back to the city.

​Even with the clouds, Spruce Woods was awesome. I’m already counting the days until next year’s Spruce Woods Star Party. With a little luck, the skies will open wider, the nights will last longer, and I’ll have my new image-stabilized binoculars in hand.
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​Welcome to my digital corner! I've created this website to document my achievements, share my thoughts, connect with kindred spirits, and expand my personal learning network. Feel free to explore my diverse achievements, delve into my thought-provoking musings, discover my recommendations, and join me in the journey of self-discovery and lifelong learning. As a passionate advocate for intellectual exploration and a believer in the power of connections, this platform embodies my commitment to nurturing the curious mind. Thank you for visiting and sharing in this ongoing adventure.

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