Scientific Speculation

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Can we breathe the moon's crust?

3 answers · last activity about 6 years ago by Kromey‭

space travel science-based moons colonies space-travel

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Where to place industry in a megastructure?

3 answers · last activity about 6 years ago by Philipp‭

science-based cities megastructures gas

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What would be the short-term and long-term effects of an increase in the strength of gravity on humans?

1 answer · last activity about 6 years ago by BuildingBetterWorlds‭

biology science-based physics humans gravity

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Polarity of a planet's lightning strikes reversed?

2 answers · last activity about 6 years ago by The Glis Jackel‭

reality-check planets electricity lightning light city

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How would an aquatic civilisation forge tools?

8 answers · last activity about 6 years ago by Liath‭

water technology underwater technological-development

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What would happen in North America if California became drier?

2 answers · last activity about 6 years ago by Vincent‭

climate culture futurology earth agriculture

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Could higher land-based life exist on a planet with a pressure of about 1 MPa?

5 answers · last activity about 6 years ago by celtschk‭

biology reality-check

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How would life be different on a planet where intelligent life saw heat instead of colour?

7 answers · last activity about 6 years ago by aspiring_sarge‭

science-based

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What would be the effects of the common house cat rapidly acquiring flight ability?

5 answers · last activity about 6 years ago by Dan Dascalescu‭

biology society domestication earth

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What social structure would be developed by an intelligent species with distinct functional physical differences?

3 answers · last activity about 6 years ago by neph‭

biology civilization ethics

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What would be required for a completely self sufficient 1 man habitat?

1 answer · last activity about 6 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 about 6 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 about 6 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 about 6 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 about 6 years ago by CodeMoose‭

biology fauna

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Varying Gravity

2 answers · last activity over 6 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 6 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 6 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 6 years ago by neph‭

science-based urban logistics

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How realistic are four legged aquatic animals?

4 answers · last activity over 6 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 6 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 6 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 6 years ago by bowlturner‭

science-based physics

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Would gravity be constant inside a Bernal sphere?

3 answers · last activity over 6 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 6 years ago by overactor‭

society psychology reproduction

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Maximum Earth population by wiping out biological life

2 answers · last activity over 6 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 over 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 over 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 over 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 over 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 over 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 over 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 over 6 years ago by Libellendrache‭

planets culture

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Primary environmental concerns of a new coastal settlement

2 answers · last activity over 6 years ago by Maximillian‭

environment weather colonies

Communities