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Q&A

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

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

Almost all of our terrestrial furniture is designed and depends on gravity. Beds to lie down in, chairs to sit down on, tables to place things on top. None of these would work in a zero-G environme...

3 answers  ·  posted 8y ago by congusbongus‭  ·  last activity 8y ago by congusbongus‭

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What would change in a dominant/predatory animal given two heads?

Take any well-known aggressive/dominant/predatory animal - wolves, big cats, bears, dragons, etc. Now say this animal were to have two heads, each equal in all capacities. What would realistically ...

2 answers  ·  posted 8y ago by CodeMoose‭  ·  last activity 8y ago by CodeMoose‭

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Varying Gravity

Suppose a very large planet orbited a star or other spacial body in an oval shaped path, similar to Earth's but closer to induce a varying gravity during orbit. The planet has a large gravity wel...

2 answers  ·  posted 8y ago by The Glis Jackel‭  ·  last activity 8y ago by The Glis Jackel‭

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Life on an Earth-like planet with solid core?

How big a difference does the Earth's liquid outer core and mantle make for the evolution of complex life? If all of Earth's parameters would be the same, but it had a solid interior just like Ma...

2 answers  ·  posted 8y ago by Florian Hollandt‭  ·  last activity 8y ago by Florian Hollandt‭

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What would have to happen in order to force us to live in the ocean?

What kind of a scenario would have to occur in order for human beings to seek survival on the sea floor? It could be man made or natural, ice age or heat apocalypse, sudden disaster or gradual coll...

3 answers  ·  posted 8y ago by Clean Ogre‭  ·  last activity 8y ago by Clean Ogre‭

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How would a completely urbanized city-planet support its population?

Related: How would a completely urbanized city-planet be maintained? How would the global environment of a completely urbanized city-planet be affected? Why would a completely urbanized city-plan...

5 answers  ·  posted 8y ago by neph‭  ·  last activity 8y ago by neph‭

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How realistic are four legged aquatic animals?

On earth most of our sealife is fishlike (excluding a few other species such as squid/octopus). As far as I'm aware there are no legged creatures which live solely in the sea. In my world I'd like...

4 answers  ·  posted 8y ago by Liath‭  ·  last activity 8y ago by Liath‭

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Is it possible to terraform a hot planet?

I want to make a hot planet habitable for mankind. It could be a planet in the habitable zone like Venus or outside of the zone like Mercury. These are just examples. Someone said here: Terrafor...

1 answer  ·  posted 8y ago by Vincent‭  ·  last activity 8y ago by Vincent‭

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What is the maximum size of a flying creature?

Giant winged beasts such as the Roc and the western dragon feature strongly in mythology. Is there a maximum size on a biological winged flying creature? How would an atmosphere different from Ea...

3 answers  ·  posted 8y ago by neph‭  ·  last activity 8y ago by neph‭

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What factors go into whether a moon or planet is tidally locked?

I was thinking about a different possibilities for habitable planets. And I was wondering what actually causes a planet to be tidally locked? I am assuming it more than chance that the bodies rot...

3 answers  ·  posted 8y ago by bowlturner‭  ·  last activity 8y ago by bowlturner‭

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Would gravity be constant inside a Bernal sphere?

Suppose one constructed a Bernal sphere, similar in design to that described in this article and this article at the National Space Society. If the sphere was simply rotated on a single axis, wou...

3 answers  ·  posted 8y ago by Village‭  ·  last activity 8y ago by Village‭

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Social implications of intelligent species that practices external fertilization

Some species that reproduce sexually, don't actually have sex as such. Instead the female might lay soft scaled eggs, which the male then fertilizes extrenally. I want to know what a society of an...

4 answers  ·  posted 8y ago by overactor‭  ·  last activity 8y ago by overactor‭

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Maximum Earth population by wiping out biological life

I want to create a world set on our Earth but with humans converted entirely to machines, so the population can be larger than would be possible with biological humans. In contrast to biologically...

2 answers  ·  posted 8y ago by trichoplax‭  ·  last activity 8y ago by trichoplax‭

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What would be the effect on life/civilisations if the length of a year was longer or shorter?

If you want to have a smaller star but you also want to keep your planet in the habitable zone, you need to put the planet closer to the star. This means shorter years. It is also possible to have ...

3 answers  ·  posted 8y ago by Vincent‭  ·  last activity 8y ago by Vincent‭

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What are the factors influencing the temperature of my world?

The question is rather simple, the answer is more complex. It is to answer why some places are colder than others. Example: North America is colder than Europe at the same latitude.

1 answer  ·  posted 8y ago by Vincent‭  ·  last activity 8y ago by Vincent‭

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What light gas can I have in the upper atmosphere?

I want to have an upper atmosphere composed of a gas which is lighter than "air" so that my human occupants of a planet can harvest it and use it to fill blimps and hot air balloons. I'm planning ...

3 answers  ·  posted 8y ago by Liath‭  ·  last activity 8y ago by Liath‭

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What efficiencies make a realistic food chain?

I'm trying to design a food chain. For the sake of argument lets say it's based on flying creatures over a particular mountain range. Sun Plants/Fungus etc Tiny Insects Small Birds Hawks Large Ape...

3 answers  ·  posted 8y ago by Liath‭  ·  last activity 8y ago by Liath‭

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How does the age of a planet impact terrain?

As the title suggests, what happens to a planet geologically and geographically over time? This question came to mind from the many sessions of Civilization I have played where when you set up a c...

3 answers  ·  posted 8y ago by James‭  ·  last activity 8y ago by James‭

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Why would a complete urbanized city-planet exist?

Related: How would a completely urbanized city-planet support its population? How a completely urbanized city-planet be maintained? How would the global environment of a completely urbanized city...

5 answers  ·  posted 8y ago by neph‭  ·  last activity 8y ago by neph‭

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How realistic is it that cultures on different planets influenced each other?

If two (or more) planets are within travel distance from each other and they often trade with each other, how likely is it that these planets cultures influence(d) each other? For example: On plan...

4 answers  ·  posted 8y ago by Libellendrache‭  ·  last activity 8y ago by Libellendrache‭

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Primary environmental concerns of a new coastal settlement

A group of settlers from a mid-renaissance era have setup an initial settlement along a coastline. Materials for shelter exist and fishing serves as the initial food source. What are the primary ...

2 answers  ·  posted 8y ago by Maximillian‭  ·  last activity 8y ago by Maximillian‭

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