Welcome to Rasmussen’s Guide, a tool for those wanting more science in their science fiction.
It is for GMs running campaigns who need an alternate world with a logical ecology. Admit it, game worlds need internal logic, after all. Living animals do not spontaneously generate from nonliving matter, nor do they magically appear out of thin air. All living things metabolize, reproduce, grow, and adapt. They do not do these things in a vacuum. This planetary guide is a concise look at these lifeforms as they might evolve on a variety of planets, moons and celestial objects, using each world’s surface gravity to define its primary vertebrate Superclass and maximums.
Dwarf Planet Divot
Depending on star type, a dwarf planet with a Terra-like atmosphere in a habitable zone orbit may have a differently colored sky. Depending on star type, a dwarf planet in a habitable zone orbit may have a different apparent size of star than Terra’s Sol.
A dwarf planet is a celestial body that (a) is in orbit around a star, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighborhood around its orbit, and (d) is not a satellite. Collisions with other icy/rocky objects in the neighborhood around Divot’s orbit are frequent. Asteroids and meteors strike often. A constant rain of space dust also peppers the tiny world.