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Q&A Transportation across a liquid metal lake

TL;DR then scroll down, genius This question is set in a planet with a human population, about the size of Earth with earth-like formations, that has appropriate lifeforms to the conditions follow...

11 answers  ·  posted 10y ago by blaizor‭  ·  last activity 10y ago by blaizor‭

Question travel physics
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Q&A What would a binary black hole look like from the surface of a planet orbiting that system

If it is even possible, what would the Goldilocks zone be like - in fact is such a system even possible of holding life - around a binary black hole? Could it have planets orbiting it? EDIT 1: Oh ...

7 answers  ·  posted 10y ago by grimmsdottir‭  ·  last activity 5y ago by grimmsdottir‭

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Q&A Pack animals for forests

My setting takes place in a densely forested continent, with huge trees and rushing rivers. The problem is that this forest stretches on for thousands of miles, only occasionally punctuated by some...

10 answers  ·  posted 10y ago by Feaurie Vladskovitz‭  ·  last activity 8y ago by Feaurie Vladskovitz‭

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Q&A What is the technical feasibility of DNA-altering drinks in a fictional bar?

I am interested of a fictional future world where people can walk into a bar, order a drink with the flavors they want, and as that drink flows through their system, their DNA is modified. An exam...

4 answers  ·  posted 10y ago by coderworks‭  ·  last activity 10y ago by coderworks‭

Question genetics
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Q&A Could a Species Use Tools (and Build a Civilization) Without Thumbs?

If humans were to vanish completely from the Earth rapture-style, other primates would possibly slowly evolve and eventually take our place (in a few million years?), since they have both the basic...

3 answers  ·  posted 10y ago by Serban Tanasa‭  ·  last activity 10y ago by Serban Tanasa‭

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Q&A How would humans have developed without fossil fuels?

I am designing a world where humans have somehow developed or have been put onto a planet in a primitive state. This world has only been habitable for about ten thousand years and therefore only ha...

5 answers  ·  posted 10y ago by JDSweetBeat‭  ·  last activity 8y ago by JDSweetBeat‭

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Q&A Why would people use flapping-wing instead of fixed-wing aircraft?

Ornithopters are vehicles that fly by flapping their wings, rather than trough use of a propeller or jet engine. They've been proposed and built many times throughout history, and are a common elem...

6 answers  ·  posted 10y ago by ckersch‭  ·  last activity 9y ago by ckersch‭

Question flight light
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Q&A How would we build Earth Mark II?

It appears that multiple planets existing in the same orbit is theoretically possible. In that case, how would we go about building a second Earth-sized planet and inserting it into some position i...

9 answers  ·  posted 10y ago by mjr‭  ·  last activity 8y ago by mjr‭

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Q&A Towering Titans of Technological Terror

Okay, this is unrelated to my current world building in any way whatsoever, but... I have always been a huge fan of the humongous mecha genre (bonus points to anyone who actually recognized my ava...

7 answers  ·  posted 10y ago by Feaurie Vladskovitz‭  ·  last activity 8y ago by Feaurie Vladskovitz‭

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Q&A How can I brighten the night sky (just a bit)?

Okay so we have the case: My world is Earth-like(Spherical) Slight fantasy, but also some science It has a normal day-night cycle and seasons I need for a particular area to make the sky somewh...

16 answers  ·  posted 10y ago by MikhailTal‭  ·  last activity 9y ago by MikhailTal‭

Question alternate-worlds
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Q&A What effects could a hole in a planet have?

On a planet with Earth-like attributes in every way, including physics and geography, what repercussions would there be for a relatively deep 'dent' in one quadrant of the spherical body? This is o...

6 answers  ·  posted 10y ago by blaizor‭  ·  last activity 5y ago by blaizor‭

Question planets physics
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Q&A Life on a Venusian world?

I define "Venusian world" to be high pressure, thick atmosphere, and high temperatures. Assume the atmosphere is similar to Venus, but whatever gets the same effect and supports life is fine. I'm ...

1 answer  ·  posted 10y ago by System‭  ·  last activity 10y ago by System‭

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Q&A How would humanity enter a Dark Age?

Humans have grown fat, complacent and cock-sure of the certainty of future progress, arrogantly expecting to build minds in their own image. They even dream of building themselves a city, with a to...

30 answers  ·  posted 10y ago by Serban Tanasa‭  ·  last activity 6y ago by Serban Tanasa‭

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Q&A Maglev transportation without tracks

A frog has already been levitated without any magnetic object attached to it. I'm wondering if it's possible to reverse this for transportation purposes, by having a vehicle levitate itself using m...

3 answers  ·  posted 10y ago by mjr‭  ·  last activity 10y ago by mjr‭

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Q&A How long would a Martian colony take to gain independence?

Assuming only plausible advancements in science, a Martian colony is established before the end of the century. (Sooner if possible). What materials would be needed in regular shipments from Earth?...

3 answers  ·  posted 10y ago by Red_Shadow‭  ·  last activity 9y ago by Red_Shadow‭

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Q&A Building and powering a computer in a bronze age world

A character needs to build a computer out of raw materials in a bronze age. He has a nano scale factory, so manufacturing chips and such from silicon is possible, but I'm not sure of the best way t...

8 answers  ·  posted 10y ago by AndyD273‭  ·  last activity 6y ago by AndyD273‭

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Q&A Shock Absorption For Real

Based on the previous answer here, concerning hammer-proof armor, one of the easiest way to mitigate blunt force trauma, both from swinging hammers and falling off buildings, are with some sort of ...

1 answer  ·  posted 10y ago by grimmsdottir‭  ·  last activity 9y ago by grimmsdottir‭

Question armors
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Q&A Must all planets have a solid/liquid core?

At the moment it seems we have two different types of planet We have Rocky planets with a solid core that occupies most of the mass of the planet We have Gas Giants that contain a solid core but ...

5 answers  ·  posted 10y ago by Tim B‭  ·  last activity 5y ago by Tim B‭

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Q&A What percentage by mass of the earth's surface is water?

I am creating a fantasy world where a given race is mystically tied to the planet. Predominately this race will be earth-dwellers, quite happy and content to burrow underground, but I'd like some o...

1 answer  ·  posted 10y ago by Brian_Drozd‭  ·  last activity 10y ago by Brian_Drozd‭

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Q&A Unsettled continent

In my world, I would like to have a certain configuration and I wonder if it's plausible or not. There is a continent with a climate similar to the Amazonian basin, covered by a very dense forest...

5 answers  ·  posted 10y ago by Vincent‭  ·  last activity 9y ago by Vincent‭

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Q&A How small could an Earth-like planet be while still realistically being able to sustain human life?

I'm thinking a planet orbiting a nearby star colonized by human settlers sometime in the not near, but not too distant future. How small could a planet be while still standing in as a relatively c...

4 answers  ·  posted 10y ago by akaddoura‭  ·  last activity 7y ago by akaddoura‭

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Q&A What would the reaction times and or cognition speed of an alien with a photonic or partialy photonic nervous system be?

In my reading of sci-fi I came across a fascinating concept: an alien race called the Chromatics that had a partially photonic nervous system. They were described as having very fast reflexes. Now ...

1 answer  ·  posted 10y ago by Trismegistus‭  ·  last activity 10y ago by Trismegistus‭

Question biology physics races
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Q&A How powerful of a computer do I need to simulate and emulate a human brain?

The title is pretty self-explanatory. How powerful does a computer have to be before it has the hardware capability to simulate and emulate a human mind in real-time? I'm leaving the question of ...

8 answers  ·  posted 10y ago by Serban Tanasa‭  ·  last activity 6y ago by Serban Tanasa‭

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Q&A Urban Aquatic Sanitation

In a fantasy world (a D&D setting, basically), how would an open underwater town populated by an assortment of mer-people deal with waste disposal? A few details: the town in question is a part...

4 answers  ·  posted 10y ago by Magician‭  ·  last activity 8y ago by Magician‭

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Q&A Cohabitation with large creatures

Most fantasy worlds have large creatures living in a world with humans and other races. In Tamriel, the province of Skyrim has giants, mammoth and even dragons roaming freely. The Lord of the ring ...

5 answers  ·  posted 10y ago by Vincent‭  ·  last activity 7y ago by Vincent‭