Worldbuilding Definition and 12 Threads

Hi All, First post here. I'll get straight to the point. Thinking about ideas for a novel. Would it be theoretically possible to have a world without sulfur and charcoal? The idea would be a planet targeted for colonization that doesn't have elements needed for gunpowder. What are the...

So in a story I'm writing humanity has found itself on another planet, its larger than Earth but less dense so that the gravity is roughly the same. There is a higher concentration of oxygen on this planet and most of it is pretty habitable. However for reasons that are too long to include say...

Soooo, hi PF, it's been a long time since I needed your help, but here I am again. I've been doing some worldbulding lately and I came up with this idea of a world in which civilisation and life are much, much older than in ours. Yet it isn't as developed due to some kind of natural disaster...

https://orig00.deviantart.net/1603/f/2018/163/d/8/great_lakes_earth_map_by_jdailey1991-dce7cbj.jpg Dark brown=mountains. Light brown=uplifts. Black=Igneous provinces still visible today at their original extent with no consideration of erosion. Let us say that, in the future, some scientists...

I'm looking to get into the realm of science fiction writing and am currently working out how the main "SciFi energy source" works in this world I'm trying to make. Fusion reactors are the obvious go-to, but I wanted to get creative, that said: how plausible/effective would it be to directly...

So I'm attempting to write a scientifically accurate story and i need some help with the planets characteristics. I have a few things set up already and need some educated guesses and ideas for how the rest will work. So to start with what i have: Planet name: Remvale Radius:~8370 miles Gravity...

You've finished with your garden planet and vacation planet, now you want to do something creative.

Back home, the catalyst for the worst biotic catastrophe in the world, the Siberian Traps, don't have much left. 252 million years of erosion have reduced the igneous province to a pale shadow of its former self. From 60 to 43 million years ago (not 252), a series of flood basalt eruptions...

In this alternate universe, Earth is the same as back home--8,000 miles wide, 25,000 around, six sextillion tons, orbiting a G-type main-sequence star from a distance of 93 million miles. But here, the similarities end. MOON DIAMETER--3,273 miles MASS--0.025x that of Earth DISTANCE FROM...

The geography of Great Lakes Earth, and the questions that come with it. Pangaea From 250 to 200 million years ago, all the continents had joined together to form a singular landmass called Pangaea. The brown lines presented in the map are mountain ranges varying in height above sea level...

I'm working on a project building a world from the top down. What I started with was the idea of a binary system like Keplar 47. With a habitual planet with two moons. Atmosphere similar to Earth. I'm going with an idea of a 40 hour day and 40 degree axis tilt. Is such a world possible or what...

I'm here to test an idea and if anyone wants to help make it better, they are welcome to add their own. I have a story planned that will be happening on a pretty savage world. The characters were sent there as prisoners and as their punishment they have to mine the exotic materials that came to...