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General Q&A about worldbuilding and other speculative developments that can be extrapolated from science.

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Activity Age Score Native Lottery
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What would be required for a completely self sufficient 1 man habitat?

1 answer  ·  last activity over 5 years ago by System

environment space spaceships isolation ships
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What do we get if we eat the moon?

1 answer  ·  last activity over 5 years ago by Danny Reagan

science-based geology
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What would be the effect of a powerful explosive going off in the core of a planet?

3 answers  ·  last activity over 5 years ago by DonyorM

planets science-based
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What would furniture be like in a zero-G home?

3 answers  ·  last activity over 5 years ago by congusbongus

space gravity zero-gravity
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What would change in a dominant/predatory animal given two heads?

2 answers  ·  last activity over 5 years ago by CodeMoose

biology fauna
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Varying Gravity

2 answers  ·  last activity over 5 years ago by The Glis Jackel

biology planets stars gravity orbital-mechanics
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Life on an Earth-like planet with solid core?

2 answers  ·  last activity over 5 years ago by Florian Hollandt

biology planets science-based
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What would have to happen in order to force us to live in the ocean?

3 answers  ·  last activity over 5 years ago by Clean Ogre

environment underwater apocalypse isolation earth
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How would a completely urbanized city-planet support its population?

5 answers  ·  last activity over 5 years ago by neph

science-based urban logistics
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How realistic are four legged aquatic animals?

4 answers  ·  last activity over 5 years ago by Liath

evolution water creature-design underwater
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Is it possible to terraform a hot planet?

1 answer  ·  last activity over 5 years ago by Vincent

climate planets terraforming
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What is the maximum size of a flying creature?

3 answers  ·  last activity over 5 years ago by neph

biology science-based mythical-creatures
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What factors go into whether a moon or planet is tidally locked?

3 answers  ·  last activity over 5 years ago by bowlturner

science-based physics
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Would gravity be constant inside a Bernal sphere?

3 answers  ·  last activity over 5 years ago by Village

space science-based spaceships gravity space-constructs ships
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Social implications of intelligent species that practices external fertilization

4 answers  ·  last activity over 5 years ago by overactor

society psychology reproduction
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Maximum Earth population by wiping out biological life

2 answers  ·  last activity over 5 years ago by trichoplax

science-based physics population
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What would be the effect on life/civilisations if the length of a year was longer or shorter?

3 answers  ·  last activity almost 6 years ago by Vincent

environment climate biology
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What are the factors influencing the temperature of my world?

1 answer  ·  last activity almost 6 years ago by Vincent

climate planets science-based
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What light gas can I have in the upper atmosphere?

3 answers  ·  last activity almost 6 years ago by Liath

atmosphere reality-check science-based
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What efficiencies make a realistic food chain?

3 answers  ·  last activity almost 6 years ago by Liath

science-based food
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How does the age of a planet impact terrain?

3 answers  ·  last activity almost 6 years ago by James

earth-like geography earth
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Why would a complete urbanized city-planet exist?

5 answers  ·  last activity almost 6 years ago by neph

reality-check science-based cities urban
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How realistic is it that cultures on different planets influenced each other?

4 answers  ·  last activity almost 6 years ago by Libellendrache

planets culture
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Primary environmental concerns of a new coastal settlement

2 answers  ·  last activity almost 6 years ago by Maximillian

environment weather colonies
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