Sci-Fi Writing and World Building Forum

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Sci-Fi writers, this forum is for you. Free ideas and advice for your stories from sci-fi fans and science professionals. Find out how to bring in real science for your story.
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Rules - Expectations in using the writer's forum
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The Short Story Thread: Post Yours Here
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Sci-Fi Writing Tips: Dos and Don'ts for Plot Construction
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Boost Your Sci-Fi Writing with Atomic Rockets, Forensics Demystified & More!"
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4 foot diameter black hole comes to rest in Kuiper belt - then what?
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A four foot diameter black hole destroys our Sun
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Sound of a hypersonic projectile from a rail gun
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A planet with yearlong solar eclipse
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Writing: Input Wanted Alien chiral chemistry
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Writing: Input Wanted Number of Androids on Spaceships
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Writing: Input Wanted Revisiting the Enzmann Starship Design: A Sixty-Year Perspective
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Writing: Input Wanted A 'failed' Runaway Moist Greenhouse: Need help to model...
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Writing: Input Wanted Metal-rich moonlets / asteroids of lone Brown Dwarf sub-stars?
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Writing: Input Wanted Can a Gamma-Ray Burst Affect Communication Devices?
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What are the different types of knives and swords in a 4D Euclidean universe?
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Real Scientists in Sci-Fi: Balancing Accuracy and Offense
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Mixed hard and soft sci-fi?
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I am making an alien race and need help with their biology
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Implications of communication through quantum entanglement
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The destructive force of a 1,000kg boulder hurled by a catapult
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Help me come up with shock effect preventing technology (sci-fi book)
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Help my Original comic book become more capable
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Writing: Input Wanted Turning an interstellar ship around before reaching coasting speed?
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Grammatically speaking, which would you consider more correct?
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Help, can't visualize a fantasy worldbuilding mechanic
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Writing: Input Wanted Distance between the star systems Sirius and Alpha Centauri?
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What can realistically go wrong on an interstellar journey?
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How noticeable is an interstellar spaceship in cruise?
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Is my fictional Solar System stable and realistic?
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Could Cephalopods Be the Dominant Species in Parallel Worlds?
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Using ChatGPT to help story building
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Exploring Parallel Timelines: A Sci-Fi Mystery of Dreams and Alternate Realities
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Oxygenating a 'primordial' atmosphere...
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Awesome story title - now I just need a story
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3D space interface to other dimensions
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Tidally-locked planets flipping around their axes
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What would be the implications of a pseudoscientific 5th fundamental force?
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Could 2-D & 3-D & 4-D atoms interact?
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A 4D HyperEarth: 1000x More Space for Real Estate
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Creating a Habitable Planet with 3 Moons
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Questions About the Atmospheres of Various Sizes of Artificial Planets
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How Can a Ship Safely Brake in Space Without Crushing Its Inhabitants?
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Habitable planet at L4/L5 of binary gas giants?
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Saltwater Pool/lightning Scenario for computer game
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My fantasy story idea with photon particles
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Writing: Input Wanted Civilians in Space vs. Professionalism and Military Decorum
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Is there a more elegant way to express eg 14% (Base_10) in Octal?
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Super-critical atmospheres that we could tolerate?
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Help requested on long-term habitable-zone stars
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Travel Time Between the Planets
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Boron on extrasolar rocky planets?
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Question: Drag in a 4D Universe
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Questions about a habitable second moon
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Writing: Input Wanted Postulating Life on Jupiter's moon Europa
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Surf 4D: Ride the Wave, Make a 360°
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I fed ChatGPT a bunch of metaphysics and asked for a story proposal
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When writing a third-person limited narrative for an amnesiac, what is...
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Can you watch a gamma-ray burst from the side?
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A mind excercise inside videogames
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Physics of Artificial Gravity....
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Exploration of an Artificial Universe: Properties and Behaviors
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Writing: Input Wanted Future weapons that are portable....and destructive
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What is the Theoretical Energy Density of Inflation?
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Writing: Input Wanted Does this sound like a rip off of Halo?
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Unlocking the Mystery of Hyperdimensional Discus: Why a 4D Discus Won't Fly
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The real 2020 as a 1980s science fiction story?
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Our space ship has lost power, what happens now....
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Did any novels predict the effects of COVID-19?
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References in a fictional novel
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Clocks On a Hyperdimensional Planet
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Motorized Watercraft on a Hyperdimensional Planet
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Equator of a Planet with Four Spatial Dimensions is a 4D Torus
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Interplanetary Portals vs Gravity
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How do you measure time on a tide locked planet?
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A problem with interstellar travel
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How could you see an image without photons? (imaging systems)
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Can anyone provide suggestions for a book on prose-writing?
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Can comets create a microclimate crater on Mars 30km deep with 0.7bars?
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Protagonist wants to meet his exact clone
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The interior design of the central trunk of a ring spaceship
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Vanishing Pencil: Math/Physics Mystery from High School Teacher
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Force Field Experiments: Realistic Physics Questions
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At what speed can a person jump in zero g?
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Wall thickness of ring habitats for radiation shielding
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Optimizing Atmospheric Entry Speed in Space Games
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Sandy Hill Plunge: A Lifted Bronco's Free-Fall
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Why do we need FTL if traveling at the speed of light is instantaneous?
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Sapient Life Indigenous to a Planet Orbiting a Red Dwarf
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Ideas for novel I'm writing I would love some insight on a concept
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Structure of the Galaxy: 6 Questions Confirmed
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Number of Decks on a Rotating Habitat
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Writing: Input Wanted Black holes as weapons - easy way to calculate the evaporation blast
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Writing: Input Wanted A dangerous space mission that requires a lot of helping hands
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Docking spaceships to ring habitats
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Exploring Military SF: Realistic Energy Shields
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If you are moving in a ship at FTL, could a pilot react at FTL?
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Could Localised Variations in Physics Occur?
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Let's build a quantum radio receiver
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Seeking a nerd well-versed in Cosmology and Dungeons & Dragons
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Scott Manley's Video: Pulsed Rocket Drives
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Wood as a precious resource on spaceships
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Too Much Stellar Flux: Fixing a 25-year old Problem
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Conditions inside a protoplanetary disc
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Aftermath of a collision with an ice giant
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Sci-Fi World Building

Welcome to the Sci-Fi World Building forum!

Sci-Fi writers, this forum is for you! Use this forum to discuss science fiction writing topics.

Writers, get ideas and advice for your stories from sci-fi fans and science professionals.

Find out how to bring in real science to your story for realism and credibility.

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