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Planetarium - Rasmussen's Guide: Thermosynthetic Carousel (SF)Click to magnify
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Planetarium - Rasmussen's Guide: Thermosynthetic Carousel (SF)

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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.

Thermosynthetic Carousel

From space at a distance, Carousel is a thick coin … a flattened sphere. On closer look from orbit, the planet is a silvery discus with a tarnished edge. White clouds partially obscure metallic continents surrounded by azure seas. Upon closer examination, a major fault line measuring 15,270.64 miles (24,575.71 kilometers) encircles the planet at the equator. Black organisms grow taller on the curved edge than on either flat face. Its icy white poles are in the center of each face. Carousel rotates on its axis as if it were a small, spinning plate. From the surface, water vapor clouds appear in a blue sky. The surface appears silver with gold and copper metal boulders and rocks. The plentiful boulders are heavy metals.
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DAVIDICUS S March 17, 2022 10:31 pm UTC
How would a planet like this form?
Customer avatar
John W March 18, 2022 3:01 am UTC
Hi Davidicus,

We sent your question to Merle and here is his reply:

A vast cloud of gas and dust particles surrounded a young star. A massive celestial object, some speculate a black hole, passed through the protoplanetary disk creating gravitational eddies. (An eddy is a current moving contrary to the main current, especially in a circular motion.) Carousel began to form as particles of dust collided and merged forming a disk. Other planets in the stellar system formed into spheroids.

Gravity compacted Carousel’s interior. The dense solid inner core was formed of osmium. The molten outer core was formed of iridium. The solid mantle was composed of platinum, gold, and tungsten. The crust was made of silver, gold, and copper metals.
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File Last Updated:
July 20, 2018
This title was added to our catalog on July 20, 2018.