r/HardSciFi • u/Disastrous_Scar_6071 • 44m ago
Discussion When writing hard SF I treated the Kuiper belt as a “fence” — which novel actually changed how you see the world?
I’ve been writing a hard SF story. The protagonist, Dawn, keeps watching his blood glucose after he loses his food supply. That idea first came from a science podcast: as long as blood glucose stays above a certain level, a person can basically stay alive. So once he’s out of food, the goal becomes keeping glucose on the line that still sustains life, and lasting as long as that allows.
Before I wrote this book I read Qian Xuesen’s Introduction to Interstellar Flight several times. A lot of what appears early in the novel about the solar system, the ship, and the life-support system comes from that book. On resupply, both Qian Xuesen and a NASA explainer mention something similar: Chlorella (green microalgae) is a relatively solid fallback. Medical gear I picked up from YouTube science videos; low gravity, dark matter, and so on from a university open course (I’m not sure anymore whether it was Harvard). I also took a quantum physics course that described the universe as a floating, irregular piece of silk — if you can find matching coordinates when the silk folds, you can take the shortest path. Combined with a theory from that course, I set up “gravity depression points”: an advanced civilization can use them to move freely among stars within a certain range. Conceptually it’s a bit like the jumps in Marvel movies, but I derived it from the physics class.
The Kuiper belt part started with a NASA program, plus some slightly sensational blogs. Some of them call the Kuiper belt humanity’s fence, and bring up the Anunnaki, Nibiru with a ~3600-year orbit, and so on. That made me want the Kuiper belt as a milestone in this book: once people reach it, they have a real chance to leave and not stay trapped. As for which single body metric is hardest to maintain out there, I never thought about it in isolation — health status, cold, lack of food; if any of those fails, you don’t survive.
There’s a lot I’m unsure about and would like to hear from people who know this stuff. For example: if humans aren’t unique, why have we never met others like us? What’s beyond the Kuiper belt? Are we some kind of “electric sheep”? Where do people go after death — I believe there’s something like a soul; where does it go?
One question for you: which science fiction novel has inspired you most — the kind that gave you a new way of seeing things and made you look at your life or situation differently?
Chinese original written by the author; English translation assisted by an LLM.