Questions tagged [alternate-worlds]

For questions about worlds other than Earth that are significantly different. This could be a water, ice, barren or other planet. For questions about planets similar to Earth with specific differences use the *earth-like* tag.

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3answers
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Planet with poles warmer than equator

I am trying to build an "exotic" planet under currently known physics and chemistry laws. Besides having an highly tilted revolution axis (which results in 1 day lasting 1 year), which other ...
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2answers
203 views

Room-Temperature (or near enough) Superfluids

Are there (or can there exist) a room-temperature superfluid that is not toxic or in other ways dangerous to humans? (A superfluid being a liquid that can crawl up the sides of objects and completely ...
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16answers
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Can the existence of an orthogonal reality be proven to those who cannot experience it?

In the following I consider "reality" to be "all the sensorial evidence a living being can obtain by interacting with its surrounding world". I am setting up a world where two ...
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2answers
183 views

A planet inside out [duplicate]

I've had this dream tonight about a planet that is Earth but inside out. The outside of the planet are rocks, stone, a surface like that of the moon. There a few holes that tunnel through the surface ...
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20answers
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How can I explain English existing in a fantasy world?

My hero travels from our world to a fantasy world where people speak English. While there are other nations that speak non-English languages, the particular land she arrives in does. How can I explain ...
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2answers
298 views

How to make a planet with differential gravity and constant daylight

I am hoping to create a planet with a greater rotational speed, making it oblong, thus causing differential gravitaion from the equator to the poles. I am hoping for the gravitarion to be lighter than ...
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4answers
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A planet rotating twice per second; what mass is needed to hold it together, and how oblate would it be?

I want to create a planet that has a frequency of two rotations per second, thus making a "Planet without Night". The planet will be like a flattened disc, due to inertia causing the planet to be an ...
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10answers
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Is there a reason why similar or the same musical instruments would develop?

In a lot of fantasy world's the instruments used are the same or very similar to our own, the real reason why is obvious: the creators would have to create a music system from the down up which is ...
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1answer
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Infinite office building with main character trying to understand it [closed]

I was thinking about a story featuring a main character waking up in some kind of infinite alien "office" building. Infinite by means of number of rooms and all three directions, maybe with gangways ...
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2answers
150 views

What are the consequences of a looping 3-dimensional space? [closed]

I was thinking of a world with a closed 3-dimensional space that would loop on itself. To describe it in another way: Forever traveling west, you came back to your starting point from east, same thing ...
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2answers
277 views

How would Water and wind current work on a fantasy earth?

My world is flat. Water constantly pours over the edge, where it becomes vapor and forms clouds. Assuming that magic is involved to create Earth-like gravity, what effects would this setup have on ...
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4answers
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What would it be like to live on a rapidly rotating planet?

On Earth we don't really notice many effects of the Earth spinning, apart from the day-night cycle. It took a long time for people of Earth to realise that it even was spinning, but there are ...
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2answers
382 views

Consequences of a completely friction less surface with gravity like moon

In the year 2588, ISRO (Indian Space Research Organization) along with collaboration of NASA had discovered a new planet named Accio several light years farther than Pluto. Scientists have computed ...
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6answers
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What type of architecture would an arachnid /crustacean likely to have? [SCULPTING FINISHED]

UPDATE!!!! - FINISHED THE SCULPT :D [UPDATE: Much Much bigger response and feedback than i anticipated, I am hugely greatful and overwhelmed by the ideas and the help, I will keep the thread going ...
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1answer
403 views

How cold can a planet actually get?

The coldest place in the universe that we have observed is in the Boomerang Nebula. Similarly to a refrigerator, heat is carried away through a fluid, resulting in a space colder than the surrounding ...
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2answers
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What would a world with a 45 degree axial tilt look like

If an alternate Earth had an axial tilt of 45 degrees, what would the seasons look like? Being the most extreme tilt a planet can have before simply replacing North/South with East/West, obviously ...
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10answers
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How would a “reversed planet” be able to exist?

I want to write a novel situated in a “reversed planet”: there are two stars orbiting each other, and there is a little spot exactly in the middle of the two that is suitable for life. A normal planet ...
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1answer
100 views

How was Bladetree Magic created? [closed]

In my make believe world of Bladetree, there exists "Symbolic Magic" Where you are able to create magic powers and effects with "special" symbols. I will explain, before asking my question. These ...
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1answer
667 views

Ecosystem of Bladetree, a tree that has a trunk growing horizontally over the ocean [closed]

Regarding the tree in this question, what kind of life forms would be possible if this tree were the only solid structure above water on this 50% of earths gravity, water planet? No land, just a ...
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1answer
85 views

Is an identical recreation of our world's creation happening right now? [closed]

If we assume the scientific idea of parallel universes, assuming that all universes that exist now are different from each other in the present and/or past, and so a new universe is created every time ...
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6answers
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How much time would it take for a planet scale Miller-Urey experiment to generate intelligent life

Stanley Miller's experiment was an amazing step forward in unifying inorganic and organic chemistry. It was also a landmark development for the theory of chemical evolution. Miller-Urey Experiment ...
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1answer
143 views

What would flora and fauna look like on a world in constant sunlight? [closed]

If a world existed in which, by any mechanism you like, the world were constantly exposed to sunlight or visible light of comparable brightness on all sides (so no side is correspondingly in permanent ...
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1answer
114 views

Trying to build a realistic dead-people, biologically and environmentally friendly world based on biological naturalness and ancestry [closed]

What would be wrong, with, say having an open area where everyone could be let there to decompose naturally (once dead). How long would it take, using this technique, for subside to reach the stage ...
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9answers
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Life on Smooth World

Welcome to Smooth World. Most of this planet (at least two thirds, but preferably more) has only tiny differences in elevation, 30-40cm at most. No hills, no mountains, no valleys. Even plains found ...
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1answer
393 views

Plausibility of fantasy setting

I'm really excited that this topic actually exists here. For the past weeks I've been thinking about creating my own fantasy world - because there are not quite enough yet. My primary aim is to make "...
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7answers
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How would a planet-sized computer power receive power?

Imagine: A Kardashev Type I civilization mainly resides on a planet analogous to Earth, with one moon, analogous to Earth's moon. Eventually, the society grows so complex that machines filling space ...
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1answer
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Would it be possible for iron and silver to be combined chemically into an alloy?

In a world with modern day scientific capabilities, would it be at all possible to create an alloy with a combination of both iron and silver that is usable within weaponry such as knives or swords or ...
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5answers
178 views

Interfacing with unknown technology?

Lets say humans from an alternate reality find a modern day laptop floating out in space and bring it back down to to study it. The humans are a little less advanced than us and are very curious what ...
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3answers
200 views

Do great minds really think alike? [closed]

On earth, there are humans that have been separated from each other for hundreds of years, living in isolation from each others cultures. Upon further examination into each different culture, you ...
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2answers
539 views

If magic was real, which sort of particles could explain it? [closed]

I was thinking along the lines of how particle physics will change, or need to adapt if we have something like magic being true. I mean there are all different types of magics which are possible like ...
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2answers
182 views

Other universes in a broad sense [closed]

When speaking about other universes people usually consider altered physical laws, while leaving logic and other basic things unchanged. What if to consider other universes based not on different ...
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1answer
194 views

How would people with the wisdom of the 7th century describe or explain tectonics

This question is basically related to my former question: What would change if our Earth lacked mountains? (Geology) So in my world people have stopped at a level of wisdom that might be similar to ...
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3answers
7k views

How much energy would opening a worm hole require approximately?

I'm building a story about a world where it has been discovered how to travel to any possible universe according to the many-worlds interpretation, and there's a company which is in charge of sending ...
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2answers
251 views

How can my Titan-like cryoplanet have clear skies?

I'm piecing together the biology and ecosystem of a Titan-like cryoplanet. And I want it to have clear or nearly-clear skies instead of Titan's complex hydrocarbon haze, so that my ethane-based ...
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1answer
1k views

can anime exist in a parallel universe [closed]

The Multiverse Theory states that there are might be infinite amount of universes each with different possibilites so is it possible for an anime universe to exist in some universes?
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3answers
794 views

If our world was on a turtle… then how big would the planet the turtle is living on be?

This sounds really stupid, but I'm trying to think of a way to make World Turtle work. And what I got after 5 minutes of careful deliberation, would be that the our earth would have to be 'flat' on ...
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2answers
2k views

Where are the wettest and driest places in this world and why

I have created a world map for a story I'm making. And it has been too long since I studied geography and geology. Assuming earth-like conditions, and a normal distribution of climate based on (...
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6answers
443 views

Is there any evidence against alternate realities?

In our fantasy series, the topic of Travelling between worlds is a major theme. Is the existence of other worlds actually possible? As a writer, it often feels less like coming up with a story and ...
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8answers
865 views

In a multiverse war, are these armies evenly matched?

My world (actually worlds) has a multiverse that has two empires at war with each other. They travel through universes via portals built by an even older multiverse civilization, which was destroyed ...
2
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3answers
175 views

Air, water, and …? [closed]

Suppose you have a planet with two different, immiscible, ocean-forming liquids. You start out immersed in gaseous air, and you can walk down the sea shore where there's a clear interface with liquid. ...
2
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0answers
103 views

A world 'similar' to ours [closed]

According to a Ted Ed video about Creating fictional worlds, if they are created all the time in people's minds. What audience would a world (for example) where our favourite foods are names of ...
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3answers
273 views

Could the inhabitants of a acidic world still develop a technologically advanced society without metallurgy?

Recently i've read Worldbuilding by Stephen Gillett and one thing that struck me was that for one reason of another many of the alien worlds lacked the resources needed for metallurgy. However, the ...
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7answers
2k views

How large could an empire with WWII-era tech become on a very large world?

How big could an empire using World-War II equivalent technology become on a very large world? Setting: Handwavium-based-artifact by a Kardashev III+ civilization, or perhaps a simworld created by ...
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2answers
489 views

Hottest possible terrestrial planet

I recently read this article (http://www.space.com/5985-hottest-planet-discovered.html) about a hot Jupiter that orbits it's star about once a (earth) day. This and remembering how high of an albedo ...
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18answers
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Would a culture with magic consider it magic? [closed]

I was discussing with a buddy of mine about magic and how it could easily be explained using alternate laws of physics. She replied simply "Magic that relies on alternate physics is only magic to ...
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8answers
1k views

Economy in Mirror-Worlds

Imagine a world as we know it. People go about their daily business, working to earn money to spend to be happier. Politicians lying about the same things to get votes to get more power. Wars ...
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3answers
443 views

How would mountains and hills have to be made-up in order to impede tunneling them WHILE still allowing them to be mined out?

In my con-world I went lengths to introduce a plausible lighter-than-air element and did rather large amounts of thinking about landmasses in order to promote the development of airship technology ...
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1answer
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Resources for Climate World building

I'm trying to create a continent where desert areas are as maximal and fertile coastal areas as minimal as possible. I've been trying to find some tools to help me with this, but I've only been able ...
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3answers
145 views

How would the lifestyle of people change if they learned to live by doing photosynthesis?

Consider a parallel universe where people have developed into beings who can survive by doing photosynthesis. That means there is no need for food they can just survive just by using sunlight. Now ...
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1answer
174 views

Recommended Space Simulator? [closed]

Call this the equivalent of the map simulator, only for space. Does such an animal even exist? Finding downloadable map resources is easy. This, not so much. I'm essentially looking for a ...

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