From Abulafia Random Generators



Makes descriptions of interesting mostly-human-explorable planets, of a detail visible from in-system, balancing the evocative and scientific.

Reference: Earth is 1.0 M⊕, 190-340 K, 287 K avg, 1.0 atm (humans surviving unprotected from 0.4 to 4 atm), with a liquid water hydrosphere and nitrogen-oxygen atmosphere

Strange New Worlds

K2-93 e

A 0.7 Earth-mass, cold 250±20 Kelvin rocky silicate planet. It has a 0.7 atmosphere actively cycling between a mix of nitrogen and sulfur, and nitrogen and traces of sulfur and water vapor. It has a predominant, polyhedral region with sparse jagged vermillion plains and encircled by enmeshed mountain ranges, with some areas filled with countless pentagonal depressions packed with crystalline gallium, with a narrow band of indigo domes running roughly pole-to-pole. The surface material is otherwise lustrous violet slabs strewn with dark red gravel.



CoRoT-66 d

A small 0.3 Earth-mass, freezing 110±60 Kelvin high-carbon rocky silicate planet with 8 captive satellite asteroids. It has a tenuous 0.02 atmosphere of a mix of carbon dioxide and methane. It has multiple regions dominated by nodular yellowish-orange lowlands and with a few large concentric outcroppings separated by fractal dark ebon outcroppings, and polar regions etched by countless gritty craters packed with calcium-tin. The surface material is otherwise vivid indigo slabs coated with lustrous white rocks.



Xesteg i, "Newworm"

A 1.04 Earth-mass, cold 230±20 Kelvin rocky silicate planet with almost 1.6 times the expected density and gravity and 9 captive satellite asteroids. It has a hydrosphere of liquid iron pentacarbonyl, and a 0.5 atmosphere actively cycling between a mix of hydrogen and oxygen, and carbon dioxide and traces of sulfur. It is primarily dominated by an immense calm tidal polyhedral sea, spotted with countless islands packed with dozens of lenticular divots, and isolated regions with sparse voronoid vivid yellowish-green ridges. The surface material is otherwise undifferentiated vivid violet clay.



Beta Orion Al

A small 0.2 Earth-mass, frozen 20±20 Kelvin high-krypton solid iron planet with a solid iron moon. It has a dormant hydrosphere of bromine solidified as polar ice caps, and a thin 0.2 atmosphere of hydrogen. It is primarily covered by an immense a tidal frozen sea, with 4 continents with some isolated netlike vivid orange dunes, and broad bands of lustrous reddish-orange ridgelines radiating outward from a vast mountain. The surface material is otherwise undifferentiated dull magenta bricks.



Kepler-4028 g

A 1.1 Earth-mass, warm 330±40 Kelvin rocky silicate planet with almost 1.8 times the expected density and gravity and a rocky silicate moon. It has a very dense 42 atm atmosphere actively cycling between nitrogen, and a mix of carbon dioxide and sulfur. It has a surface encased in cracked ruddy ridges, and isolated regions dominated by interlocking dull ebon dunes. The surface material is otherwise dark yellowish-green dust strewn with orange bricks.



HD 653736 u

A 1.1 Earth-mass, hot 380±20 Kelvin coreless silicate planet with almost 1.4 times the expected density and gravity. It has a very dense 62 atm atmosphere of carbon dioxide. It has a predominant, symmetrical region spotted with dozens of non-euclidean yellow flatlands and penetrated by cellular mountain ranges, with some areas packed with countless porous craters packed with fluorine-fluorine, with a wide band of fuchsia dunes running roughly pole-to-pole. The surface material is otherwise undifferentiated drab black granules.



Kepler-4351 d

A 1.09 Earth-mass, hot 370±10 Kelvin high-carbon rocky silicate planet with rapid rotation and 3 small rocky silicate moons. It has a very dense 48 atm atmosphere of nitrogen seething with multiple layers of brown clouds and one massive, persistent cyclonic storm. It has multiple regions dominated by chaotic taupe cliffs separated by glassy dark ebon mountain ranges, with a wide band of reddish-orange domes running roughly pole-to-pole. The surface material is otherwise light maroon regolith coated with brown tektites.



HD 376931 i, "Torringtree"

A 0.6 Earth-mass, warm 310±20 Kelvin high-carbon rocky silicate planet with almost 1.9 times the expected density and gravity. It has a hydrosphere of liquid water, and a dense 1.5 atmosphere of corrosive gasses. It has multiple shimmering deep oceans separated by strangely warped dull vermillion lowlands, and areas spotted with many striped navy blue mountains. The surface material is otherwise orange mud interspersed with white regolith.



Zeta Draco Ag, "Westhorpe"

A 1.3 Earth-mass, cold 250±60 Kelvin high-sulfur rocky silicate planet with a rocky silicate moon. It has a hydrosphere of liquid hydrocarbons actively cycling with a 1.5 atmosphere of a mix of nitrogen and oxygen with dull orange clouds and frequent cyclonic storms with frequent driving snow. It has a surface spotted with countless cracked vermillion plains, and isolated regions mottled with hundreds of netlike dark taupe outcroppings. The surface material is otherwise vivid white mud spotted with taupe sand.



HD 203181 Af

A 0.8 Earth-mass, warm 330±40 Kelvin solid iron planet with odd radio outbursts at common comm frequencies. It has a hydrosphere of hot water and ammonia and small amounts of argon actively cycling with a 0.5 atmosphere of nitrogen with multiple layers of black clouds and extreme winds with frequent driving snow. It is primarily dominated by a huge churning abyssal ovoid ocean, and a titanic polyhedral supercontinent with three huge porous pale blue mountain ranges, and a polyhedral region etched by hundreds of matte craters. The surface material is otherwise composed of green silt.





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