Scientific Speculation

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What is the minimum distance needed between physically distinct races?

3 answers · posted 7y ago by Epiglottal Axolotl‭ · last activity almost 7 years ago by Epiglottal Axolotl‭

geography races demographics genetics

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How can I estimate how far into a cave network breathing is possible?

2 answers · posted 7y ago by trichoplax‭ · last activity almost 7 years ago by trichoplax‭

science-based physics caves

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Traffic in Space (a traffic controller for low earth orbit)

2 answers · posted almost 7 years ago by 2012rcampion‭ · last activity almost 7 years ago by 2012rcampion‭

space travel society science-based orbital-mechanics space-travel

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Eye in the Sky Effect

5 answers · posted almost 7 years ago by Donny‭ · last activity almost 7 years ago by Donny‭

astronomy planets moons

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How would a Martian colony be able to celebrate Christmas?

12 answers · posted almost 7 years ago by Pavel Janicek‭ · last activity almost 7 years ago by Pavel Janicek‭

planets society humans solar-system

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Trebuchet's effect on ship design

3 answers · posted almost 7 years ago by Tyson of the Northwest‭ · last activity almost 7 years ago by Tyson of the Northwest‭

physics shipbuilding

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Is it possible for humans to evolve to eat something like wood or stone or something similar?

3 answers · posted almost 7 years ago by CrazySlayaNinjaBear‭ · last activity almost 7 years ago by CrazySlayaNinjaBear‭

evolution humans

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Cost of colony on Mars/Moon per metric ton

1 answer · posted almost 7 years ago by Irigi‭ · last activity almost 7 years ago by Irigi‭

space science-based colonies economy

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What is the soonest we could possibly have a self-sufficient base on Mars?

7 answers · posted 7y ago by overactor‭ · last activity almost 7 years ago by overactor‭

space colonies

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Could a civilization as advanced as humans exist on a planet/dwarf planet like Pluto?

5 answers · posted almost 7 years ago by CrazySlayaNinjaBear‭ · last activity almost 7 years ago by CrazySlayaNinjaBear‭

biology planets science-based civilization humans

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How to fragment a moon to form a ring around a planet

4 answers · posted almost 7 years ago by Robert Boettcher‭ · last activity almost 7 years ago by Robert Boettcher‭

planets science-based moons

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How soon will the first underwater cities be built?

4 answers · posted almost 7 years ago by Sheraff‭ · last activity almost 7 years ago by Sheraff‭

science-based cities water underwater

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Method for creating aerial visuals (photography) for fake landmasses

2 answers · posted almost 7 years ago by randomblink‭ · last activity almost 7 years ago by randomblink‭

geography software-recommendations cartography

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Would the knowledge of physics on a native aquatic planet be similar to our own?

7 answers · posted almost 7 years ago by fubar50‭ · last activity almost 7 years ago by fubar50‭

planets science-based physics computers scientific-development

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How soon will tinkering with biology be as simple as programming is now?

5 answers · posted almost 7 years ago by Sheraff‭ · last activity almost 7 years ago by Sheraff‭

biology science-based technological-development

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4 answers · posted almost 7 years ago by Rodolfo Dias‭ · last activity almost 7 years ago by Rodolfo Dias‭

biology creature-design

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Space station mass per person

1 answer · posted almost 7 years ago by Irigi‭ · last activity almost 7 years ago by Irigi‭

space science-based space-constructs space-stations

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Shallow sea world - plausable geology?

4 answers · posted almost 7 years ago by Chris Camacho‭ · last activity almost 7 years ago by Chris Camacho‭

geology sea

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Classification system and measure of progress for science and technology branches and other areas of life

3 answers · posted almost 7 years ago by moonfly‭ · last activity almost 7 years ago by moonfly‭

science-based futurology nomenclature

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Being cooked for dinner! or What Danger of Blueshifting EM into X-rays and beyond?

2 answers · posted almost 7 years ago by bowlturner‭ · last activity almost 7 years ago by bowlturner‭

space travel science-based space-travel

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Gravitational effects of portals at different heights

3 answers · posted almost 7 years ago by HugoRune‭ · last activity almost 7 years ago by HugoRune‭

travel science-based physics

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What would push a civilization to terraform a planet considering the complexity of this process?

7 answers · posted 7y ago by Vincent‭ · last activity almost 7 years ago by Vincent‭

environment planets science-based terraforming

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Can we breathe the moon's crust?

3 answers · posted almost 7 years ago by Kromey‭ · last activity almost 7 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 · posted almost 7 years ago by Philipp‭ · last activity almost 7 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 · posted almost 7 years ago by BuildingBetterWorlds‭ · last activity almost 7 years ago by BuildingBetterWorlds‭

biology science-based physics humans gravity

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Polarity of a planet's lightning strikes reversed?

2 answers · posted almost 7 years ago by The Glis Jackel‭ · last activity almost 7 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 · posted almost 7 years ago by Liath‭ · last activity almost 7 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 · posted almost 7 years ago by Vincent‭ · last activity almost 7 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 · posted almost 7 years ago by celtschk‭ · last activity almost 7 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 · posted almost 7 years ago by aspiring_sarge‭ · last activity almost 7 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 · posted almost 7 years ago by Dan Dascalescu‭ · last activity almost 7 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 · posted almost 7 years ago by neph‭ · last activity almost 7 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 · posted almost 7 years ago by System‭ · last activity almost 7 years ago by System‭

environment space spaceships isolation ships

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What do we get if we eat the moon?

1 answer · posted almost 7 years ago by Danny Reagan‭ · last activity almost 7 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 · posted almost 7 years ago by DonyorM‭ · last activity almost 7 years ago by DonyorM‭

planets science-based

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

3 answers · posted 7y ago by congusbongus‭ · last activity almost 7 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 · posted almost 7 years ago by CodeMoose‭ · last activity almost 7 years ago by CodeMoose‭

biology fauna

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Varying Gravity

2 answers · posted 7y ago by The Glis Jackel‭ · last activity almost 7 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 · posted 7y ago by Florian Hollandt‭ · last activity almost 7 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 · posted almost 7 years ago by Clean Ogre‭ · last activity almost 7 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 · posted 7y ago by neph‭ · last activity almost 7 years ago by neph‭

science-based urban logistics

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How realistic are four legged aquatic animals?

4 answers · posted 7y ago by Liath‭ · last activity almost 7 years ago by Liath‭

evolution water creature-design underwater

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Is it possible to terraform a hot planet?

1 answer · posted 7y ago by Vincent‭ · last activity 7y ago by Vincent‭

climate planets terraforming

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What is the maximum size of a flying creature?

3 answers · posted 7y ago by neph‭ · last activity 7y 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 · posted 7y ago by bowlturner‭ · last activity 7y ago by bowlturner‭

science-based physics

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Would gravity be constant inside a Bernal sphere?

3 answers · posted 7y ago by Village‭ · last activity 7y 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 · posted 7y ago by overactor‭ · last activity 7y ago by overactor‭

society psychology reproduction

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Maximum Earth population by wiping out biological life

2 answers · posted 7y ago by trichoplax‭ · last activity 7y 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 · posted 7y ago by Vincent‭ · last activity 7y ago by Vincent‭

environment climate biology

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What are the factors influencing the temperature of my world?

1 answer · posted 7y ago by Vincent‭ · last activity 7y ago by Vincent‭

climate planets science-based

Communities