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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18 votes
7 answers
1k views

Living on a giant banana world

In my story, which should be taken entirely seriously, mankind encounters a region of space occupied mostly by giant exo-householdobjects. That is, planet sized kettles, saucers, teacups, cutlery, etc....
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12 votes
11 answers
3k views

Measuring Time in a World Where the Sun Never Sets

First time here, so I don't know what to expect. I'm writing a dark sci fi mystery story that takes place on a hypothetical megastructure called an "Alderson Disk" (Example seen Below). ...
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1 vote
3 answers
108 views

Could the Deutsche Kaiserreich create a U-Boat with the following capabitities for the WWI if some timetraveler give them the blueprints?

Is possible to design a submarine that follows the following restrictions? It must have at least the capabilities of a early „the war to end all wars“ U-Boat (e.g. SM U-19). It must build-able with ...
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22 votes
7 answers
4k views

Plausibility of an advanced civilization that never found fire?

A world similar to earth (climate fluctuations, the need to cook food), and because the natural atmosphere doesn't have oxygen, the intelligent organisms there don't breath oxygen. How far could a ...
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5 votes
4 answers
266 views

Could a hypothetical planet composed of a neon-oxygen or argon-oxygen atmosphere with Earth-like pressure levels sustain life?

I'm trying to create a hypothetical planet scenario, where there is a planet that has a similar atmospheric pressure to that of Earth, but in this case, it has a gas different than that of nitrogen. ...
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5 votes
2 answers
80 views

Shantungosaurus chase, mad max style

I have a scene where there's a Shantungosaurus chase in Mad Max style, except there's no such thing as motor technology and the closest thing to guns are portable repeating polybolos (scoprion ...
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  • 374
5 votes
9 answers
2k views

How would computers work if the number zero wasn't invented?

I imagine a parallel world where people instantly went crazy and kill themselves whenever they try to conceptualize nothingness which we now known as the number zero, so no one I mean absolutely ...
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  • 46k
1 vote
2 answers
94 views

Can sharkmen perceive your emotions?

alledgedly sharks can feel a humans heartbeat from a mile away or something like that, and they can perceive electrical signals, makes you wonder how come then they are dumb enough to confuse surfing ...
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  • 374
2 votes
5 answers
134 views

Are there things that can make natural lifespan in other planets inherently longer?

How would things like gravity, air composition and density affect the lifespan of the biological protein based life that inhabits the planet, or would they have any significant effect at all? Honestly ...
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  • 374
6 votes
1 answer
124 views

human version of hermit crabs

I have some tribes of nomads that live in pretty harsh places, going around by carts or building shelter is usually not an option. They live and sleep in some kind of heavy primitive armor, I was ...
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  • 374
10 votes
11 answers
3k views

In a supercontinent would ships still be the primary way of transportation before the invention of engines?

introduction My world is made of a super-continent with very little isles, it has 100 countries, 97 of which are on land. 3 of those are underwater for folk who are able to live confortably in the ...
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  • 374
1 vote
3 answers
165 views

what alternative topological shapes could alien life take on?

I've always been intrigued by the idea that alien life would be completely different from life on this planet. recently, I've been doing some research and found out that humans, along with other ...
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0 votes
1 answer
100 views

What kind of sounds would a creature from the void make? [closed]

For a place I call The Void, its a place filled in darkness with no elements on the galactic periodic table, what sounds would it have? Especially the entities in the Void called VoidSpawn being ...
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13 votes
8 answers
3k views

How would WW2-level navy deal with my "merfolk"?

The abovementioned fictional race aren't exactly merpeople from fantasy, but I call them like that just for the sake of convenience. Rather, they're semi-aquatic humanoids, who are really good at ...
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  • 317
2 votes
1 answer
51 views

How does the environment shape taste in alternate worlds

We all know there are factors leading to the various ways of flight, walking, running, crawling, climbing and swimming. Those factors are independet of the creature as those are motions and motion is ...
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  • 1,732
1 vote
2 answers
84 views

Triassic crocodile alternative [closed]

During the Triassic period there were many different varieties of crocodile related species. The dinosaurs weren't as prominent until after a poorly understood extinct event. If this event hadn't ...
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  • 2,640
6 votes
6 answers
264 views

What would cause oceans to disappear?

I'm writing a story that happens on a dry and arid planet that has only a few oasis's where life can thrive. Life on this world either lives in the oases or lurks in the sand waiting for migrating ...
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  • 8,617
1 vote
6 answers
167 views

How could a world empire prevent rebellions with minimal bloodshed?

In the world I've thought of, monstrous beings more or less ended civilization on my planet. From the fires of this apocalyptic event, the world empire arose. It took over territory either by force or ...
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  • 918
5 votes
1 answer
101 views

Weather on a flat world illuminated by static luminaries

Consider a flat world illuminated, not by a sun following a daily trajectory overhead, but by luminaries in static locations, fixed at a finite distance above particular locations on the surface, ...
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  • 4,398
-3 votes
1 answer
62 views

Does anyone know how I can convert the time of my conworld into earth hours/days and vice versa? Is there a converter or formula I could use? [closed]

I try to find out how long the years/days/hours in my conworld would be compared to those of Earth. So here is some information about the conworld's time measures: 100 (earth)seconds = 1 (conworld)...
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6 votes
2 answers
214 views

If John Atkinson Grimshaw's Paintings were actually daylight, what kind of star would this "sun" be?

An Englishman by the name of John Atkinson Grimshaw was known only for his nocturnal paintings of the British landscape. I don't know about you, but his nocturnes have struck me as a bit...bright. ...
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  • 14.4k
1 vote
3 answers
186 views

Appstore application to assassinate anyone [closed]

Being the pessimistic person I am who always looks at the dark side of life, mostly because in this world only a small percentage of humans enjoy the luck and luxury of living in the light side of ...
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7 votes
8 answers
2k views

Can a person whose brain was 98% destroyed but then recreated maintain some of their memories?

TL:DR A brain is turned into mush, destroyed, then 98% of the organ is replaced with other brain tissue. Can that 2% account for memories shared between both brains? Can the brain remember things that ...
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6 votes
3 answers
416 views

Can gender identity exist in a world without gender roles? [closed]

Before I offend everyone let me clarify that I mean no harm, I'm just ignorant. I never figured out what gender identity is since mostly only rainbow people talk about it and I always identified as ...
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1 vote
3 answers
124 views

Mining, Scavenging and Recycling in an artificial world

Billions of years ago, an extremely advanced civilization created an artificial world. Whether it is a ringworld, a shellworld, or something more isn't really relevant. This world's crust has a depth ...
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  • 496
1 vote
0 answers
78 views

How do storms scale with planet radius?

I'm trying to figure out how weather scales with planet size, keeping other factors constant. For a specific example, say a planet with the following characteristics: Twice the radius of Earth. ...
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  • 4,398
4 votes
1 answer
152 views

Is it possible to create an alternate reality through intercepting neurons and creating artificial neuron signals like in SAO (Sword Art Online)

I have been thinking a lot about creating an Alternate Reality that would essentially allow you to experience similar or as close as possible sensations as if in real life, and I really need some help ...
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  • 41
1 vote
0 answers
68 views

To what extent can mania or depression be reliably pharmacologically induced with current technology? [closed]

Let's say in this world there was a nefarious government agency that had zero legal oversight wanted to induce psychological problems into a potential dissident via drugs. To what degree could that be ...
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  • 119
3 votes
4 answers
359 views

Water in the interior of a very large continent

Consider a world that is much larger than Earth, but has Earthlike conditions on the surface. (Including gravity = 1g, by some suitable unobtainium.) Clearly, the surface could be covered in a large ...
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  • 4,398
-1 votes
5 answers
185 views

What would be some changes in regards to courtship to a society where men are conscripted for three years into the military? [closed]

Let's say there's a major or constant level of warfare with an external enemy is a modern developed society. Think like modern day Korea or Israel. As a result of this level of warfare men are ...
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  • 362
6 votes
2 answers
256 views

How much further could ship-based radar see on a flat world?

On our spherical planet, it is highly advantageous for modern navies to have airborne radar, because it can seem much further than even the best ship-based radar, simply due to the greater distance to ...
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  • 4,398
2 votes
1 answer
111 views

What would the lakes of a planet with larger glaciers look like?

** This question is making the assumption that if a planet with a similar size and atmosphere of Earth is colder and has longer nights, it will have larger and more numerous glaciers. If this is not ...
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  • 1,585
3 votes
1 answer
138 views

How would my world connect to Earth? [closed]

I'm building a world for the novel I'm writing (called Aroura) and it's a separate world from Earth. There are three tribes, the dragons, the elves, and the humans. My heroine, Galaxy, finds out she's ...
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3 votes
2 answers
169 views

Would categorizing planes of existence be considered dumbing down or enriching when it comes to worldbuilding?

The world that I'm making draws strong influence from a multitude of religions, mythology, and folklore, and that extends to the planes from occult beliefs. These planes are the Physical Plane, Astral ...
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  • 2,023
4 votes
3 answers
116 views

What adaptations would help an animal feed on mucosae that grow on the ground?

What adaptations of the mouth or digestive tract would help a creature to collect and consume mucosae (mucus membranes) that grow over the ground? The membranes have normal proportions and properties, ...
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  • 11.8k
5 votes
1 answer
286 views

Can ravens be trained to give instruction to guide people in the dark?

The world is in total darkness, moving slow and days are longer than years (the planets rotates around the sun in 5000 earth days and rotates around itself in 50'000 earth days) One day is longer than ...
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4 votes
1 answer
119 views

Two Worlds tethered together - how would the forces affect people on the planets?

^ Not to scale Assumptions These worlds are engineered. So some aspects of the worlds can be manipulated. Equal Earth-sized planets. Tether attaching them is infinitely strong. Their separation is ...
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  • 41
3 votes
1 answer
88 views

Effect of lower average temperatures on the tropical savannahs and deserts of a planet

I have a nagging question that has been eating away at me since I am figuring out the biomes that are present in the world that I am building. For all intents and purposes this world is basically an ...
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1 vote
3 answers
156 views

A Timeline for the discovery of Alien life

Set Up The Story itself is suppose to be a Short Animated Movie. The Short goes through the Timeline of the Discovery. Kind of like a Slide Show, just more CG. The Timeline It all began on October ...
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  • 1,541
7 votes
2 answers
169 views

Does this model of atmosphere sounds plausible enough?

My world is that of a humongous cliff and pretty much nothing else. I was unable to be a flatlander so I justified it by making a humongous alien artifact and jabbing it into a polar region of a gas ...
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4 votes
2 answers
167 views

How to build a massive canal system with the aid of limited magic that does not substantially affect anything else?

Previously I have asked about my desert world Skara Could canals solve H G Wells Martians water shortage problems? To recap: For current purposes such a world would have gravity and atmosphere ...
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  • 31k
-1 votes
2 answers
197 views

Could Giant Bats Fly with Giant Pterosaurs?

Last year, the Adult Swim program Primal treated us to perhaps the most Halloweenish episode yet, "Terror Under the Blood Moon", in which our two unspoken protagonists--the caveman "...
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  • 14.4k
-1 votes
1 answer
230 views

The Serina Series: Episode III: Pterosaurs

Let's take a different route and not take the Serina route using a modern species. Today, we're looking at pterosaurs. But considering that pterosaurs had ruled the skies from the Late Triassic to ...
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  • 14.4k
2 votes
2 answers
197 views

The Serina Series: Episode II: Crocodilians

In the first episode of this series, Cats, I asked if it's possible for all 600 million house cats to evolve different niches if they were the only amniotes in a terraformed world. Needless to say, ...
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  • 14.4k
0 votes
2 answers
134 views

Can time travel result in another person? [closed]

One of my characters goes back in time (and to an alternate realm) by sixteen years, then returns to her original realm a year before she left (so after spending fifteen years in the alternate world), ...
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12 votes
6 answers
3k views

Organism that can produce water on its own (possibly from air?) not requiring a water source. Is it plausible and if how?

I have thought of a sort of desert planet that has a atmosphere pretty similar to earth and with gravity a little lower which has little to no water source and most of it is empty dry wastelands. I ...
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9 votes
4 answers
339 views

Plants Without Air

On a distant world, the atmosphere is different than ours - there is no oxygen but a high level of C02 like on Mars or the early Earth. This planet is otherwise similar to Earth but slightly warmer. ...
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2 votes
2 answers
142 views

What might make one specific area of a sea calmer than the rest?

This may very well be an easily answered question, in which case I apologize for the lack of challenge, but in all honesty I’m not sure where to start in figuring this out. I have a large sea. It sits ...
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  • 679
8 votes
6 answers
2k views

Grappling hook which attaches to almost any surface and is actually alive, is it feasible?

wondering the mechanism of how a grappling hook would be able grip onto most surfaces without missing the hit or sliding off. in video games grappling hooks are ropes or chains which when thrown onto ...
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16 votes
9 answers
4k views

Could a world with a extremely bright night sky exist?

How could an Earth-like tidally locked planet with no Moon have a bright and livable night sky? The bluish night sky should look like this: But it should be 1% as bright as Earth's day sky and ...
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  • 4,100

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