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4
votes
3answers
196 views

For a well developed high-tech country in a fantasy world, which substance has the higher possibility to be the backbone of their technology? [closed]

For a well developed high-tech country in a fantasy world, which substance has the highest possibility to be the backbone of their technology? I mean a physical substance, for example: A substance ...
1
vote
5answers
301 views

Anatomically Correct Monsters, Incorporated

In the world of Monsters, Inc., the titular monsters have wildly varying morphologies and abilities, but they nevertheless all seem to be members of the same species; after all, if it was a multi-...
6
votes
3answers
188 views

How could a small civilization move about normally, tactically, and quickly in a large swamp?

This is a small civilization (more than just a town or two) almost under the shadow of the regional hegemon. The dominant civilization knows they are there, but don't go too deep into that swamp ...
8
votes
5answers
340 views

Can early astronomers determine the gravity of their planet's “moon” without ever going there?

As I was thinking about space flight for my world, I thought about how they would need to know a planet's gravitational force before they could land, and found that humans figured out the moon's ...
9
votes
6answers
325 views

Scientifically accurate fuel for a small spaceship

I'm designing a small two-person spaceship for use in battles in space. It is set around the year 2100. It would be around the size of a tank (approx. 50 tons). It would need to be fast and easy to ...
5
votes
2answers
162 views

What could cause a planet to be in shadow for a 6 earth month period every couple of earth years?

My previous question ruled out having a moon orbiting a gas giant. I've got an interesting ecosystem (my bad, biome was the wrong word) that evolved based upon the idea that the world is eclipsed for ...
15
votes
19answers
5k views

Best Ergonomic Design for a handheld ranged weapon

I know I’m flirting with “Primarily Opinion Based” here, but I’m hoping there’s some established knowledge out there in the community that I might be completely oblivious to. If you look at pretty ...
2
votes
5answers
271 views

Can a mammal and Oviparous have child together if they have similar external body structure?

There are two humanoid races are in my fantasy story. Race A is almost like humans, except they are in super human size, have super human strength, have a higher body temperature etc. Some sort of ...
10
votes
2answers
659 views

How close to the Sun would you have to be to hear it?

Taken from this fascinating answer: The Sun is immensely loud. The surface generates thousands to tens of thousands of watts of sound power for every square meter. That's something like 10x to ...
10
votes
2answers
185 views

Realistic Interstellar Energy Transfer

I've been reading some of the excellent answers on this question about galactic empires and it led me to imagine a reasonably realistic multi-system 'empire' might keep most or all of its population ...
-2
votes
1answer
154 views

Is it possible to calculate how long a moon takes to orbit a gas giant?

if it takes the moon 6 months to pass through the gas giants shadow? Assume it is distant enough to not be tidally locked. The gas giant is 112.5 AU from the star. The star is 55 solar masses. It ...
38
votes
14answers
8k views

Security measures that could plausibly last 150+ years?

So, the world experienced an apocalypse about 150 years ago. Sad times. Me and a couple buddies are the the salvaging business, and hello, recently we found a jackpot, an untouched military base. When ...
25
votes
11answers
7k views

How would a lunar colony attack Earth?

I saw that there are many questions about how a lunar colony would defend itself. But in the not so near future the lunar colony might be stronger than Earth. They may have even suffered from attacks ...
5
votes
2answers
198 views

Humanity with the Ears of a Fox--What Differs as a Result?

In this question, we're looking at a humanity that has adapted one of the most conspicuous ways of keeping cool--larger ears. Desert animals usually have larger ears to have more room for blood ...
7
votes
6answers
314 views

What would it take to make catapults a alternate way to travel?

I have an idea for a futuristic way to travel for my Story. People get into a capsule, and it launches itself extremely fast in the air. What would be needed to make this happen for real and what ...
6
votes
6answers
312 views

Can a machine benefit from stored heat energy?

Setting Overview My world suffers from an abundance of a particular type of energy. This energy can be safely absorbed and utilized by living cells, enabling, for example, a dragon's flight and fiery ...
24
votes
20answers
8k views

Why would an invisible personal shield be necessary?

I’m trying to think of a reason why an advanced civilization would find it useful to invent an invisible handheld shield as protection against a civilization with primitive weaponry (sticks, stones, ...
7
votes
6answers
357 views

How can chaotic entities be prevented from spreading beyond their domain?

This is a follow up question to one I asked earlier:How can religions be structured in ways that allow inter-faith councils to work? So, these gods are basically artificial intelligences that are ...
13
votes
5answers
4k views

Can Papyrus be folded?

I want a character to invent the codex (that is, modern-shape books) in Ancient Egypt, which means that the primary writing material is papyrus. However, most book binding processes involve sections ...
4
votes
3answers
319 views

Is it Possible to keep an egg alive for centuries?

Is it possible to keep the egg of my humanoid character without hatching for centuries, but still able to hatch when proper care and the appropriate environment is provided? My planet is a extremely ...
5
votes
4answers
194 views

Connecting Biomes

I'm in some urgent need of advice about linking together biomes in a realistic manner. Can a taiga connect to an alpine tundra to the north, and a steppe to the south? Then what would branch off of ...
23
votes
11answers
7k views

What clothes would flying-people wear?

If there were people with wings, who didn't want to be naked all the time, what clothing could they wear, without it interfering with their flying? Note: I am assuming arm-wings, like birds, but you ...
11
votes
8answers
5k views

Surviving a planet collision? [duplicate]

Let's say there are two planets about to collide. Ignoring how they got there, it seems that in most scenarios basically all life gets annihilated by energy released the collision. How slow would two ...
4
votes
1answer
137 views

Mesas of hard(solid) light

I searched the site and found answers saying hard light can't exist. Apparently in the three years since the last question was asked, scientists started making inroads on making solid light a reality, ...
9
votes
4answers
253 views

A character suffers little to no injury from channeling electrical energy. What would voltage and amperage feel like?

In a world where magic exists, a specific character can channel electricity in whatever way you might imagine. They are relatively immune to suffering physical injury even for high voltage or current. ...
16
votes
2answers
3k views

How long until two planets become one?

Two Earth-like planets collide at a (relatively slow) speed of about 1,000 kph. For all questions regarding the size and composition of these planets, just think about Earth - and these two planets ...
14
votes
6answers
2k views

2 weeks and a tight budget to prepare for Z-day. How long can I hunker down? [closed]

tl/dr: The zombies are coming. The first will "show up" in two weeks. I have about $3000 to prepare and my plan is to hide in my home for as long as possible. I need to secure my house, buy ...
2
votes
3answers
237 views

A Really Strong reason For a War - Fantasy extra terrestrial story [closed]

In my fantasy story, there is a very important flashback: centuries back, there were 3 humanoid races - always in war with each other. The third race is more evil, more powerful(both physically & ...
9
votes
4answers
2k views

World of (nearly) identical snowflakes

In a lab at Caltech Ken Libbrecht has been simulating snowflake formation and under absurdly exact laboratory conditions, they have been able to create almost identical snowflakes. Clearly, in the ...
20
votes
12answers
5k views

Summoning A Technology Based Demon

I have a world where the "supernatural" is all sufficiently advanced technology. With examples like Gods, Demons, and Angels are AI's whose physical forms are swarms of nanobots/nanites. This being ...
8
votes
5answers
2k views

Could a singular planet have more than one diverse atmosphere?

I'm making a world which is set on a planet with two smaller "bubbles" of atmosphere at the poles, and a more stereotypical atmosphere that surrounds them. Each of the three atmospheres has a ...
7
votes
3answers
368 views

Fertilizing desert in magical medieval world

Suppose there exists a magic-based civilization. Their mining techniques are medieval and their understanding of organic chemistry and biology are on the Enlightenment era level. However, they are ...
8
votes
1answer
92 views

Could a planetary nebula obscure the presence of a black hole/neutron star?

I have a civilization that lives on a planet located inside a nebula (and orbiting a normal, sun-like star). Would this nebula somehow interfere with/ obscure the sight of a rogue neutron star/ ...
3
votes
3answers
121 views

Planet with two independent forms of life? [duplicate]

Suppose there is a planet fertilized with Earth-like life (characterized by proteins, nucleic acids, DNA, RNA) and a completely independent form of life, but also water and carbon based with different ...
1
vote
5answers
194 views

Advance human society by time-transporting a book. Which to choose? [closed]

Humanity has done it - the first time-machine was built! However, the machine's capabilities are very limited as it is very costly and fragile, which means we only have one shot. Building another one ...
-4
votes
2answers
159 views

How can polyandry function as a stable system?

Polyandry us when a female has two or more husbands to promote sperm competition and increase genetic variability. However, this is seen as largely unstable in real life due to the fact that two males ...
5
votes
3answers
142 views

Using an Asteroid's Momentum for Spaceship Propulsion

There's a lot of talk on futurist blogs about mining asteroids for propellant and other resources for space travel, but I have something else in mind. Could a spaceship, starting out in geocentric ...
8
votes
8answers
2k views

How can religions be structured in ways that allow inter-faith councils to work?

The people of this world follow what is called "The Faith of the Seven". These gods represent different aspects of creation. They are: Khorne: god of war Tzenteech: god of change & ambition ...
22
votes
9answers
3k views

How to check what is edible on an alien world? [duplicate]

You've landed on another planet. There are some forms of plants and animals on this world but how do you know what is safe to eat? Obviously we went through this on earth, finding the right berries ...
6
votes
2answers
106 views

How to roughly extrapolate artillery range for planets with different atmospheric pressure?

I'm looking for some rough way of extrapolating artillery range for planets with different atmospheric pressure: Realistically, the data available: Hypothetical range in vacuum: $\dfrac{V^2}{g}$ (V -...
9
votes
1answer
117 views

Creating an Anatomically Correct Lusca

The Lusca (its name meaning 'Octopus Shark') is a cryptid from the Bahamas, supposedly a 6-9 meter (or even 23 meter) long man-eating Octopus that lives within the blue holes, dragging victims down ...
32
votes
7answers
5k views

How could Nomadic scholars effectively memorize libraries worth of information

In my fantasy world there exists a nomadic people known as the Ròda. The Ròda believe in the collection of knowledge, lore, and more importantly spells. They practice their beliefs by travelling in ...
12
votes
4answers
1k views

The Sword in the Stone

I am trying to recreate King Arthur's the Sword in the Stone using chemistry. I have a couple ideas how this could be done Would any of these work or how it might work? Arthur removes the sword from ...
11
votes
2answers
186 views

Rogue Planet Illuminated by Galactic Centre

The black hole question reminded me of an idea I wanted to implement at some point in a space campaign, but didn't go forward with because I was unsure whether it's merely statistically very ...
4
votes
3answers
145 views

Limitations of the interactions of fact and opinion thoughtforms in the Aethernet

The Setting Long story short, we cracked the code of the universe and then reprogrammed it to give ourselves admin privileges. But then, we realized that having top-level access is boring. There is ...
6
votes
1answer
113 views

Ecological implications of osmotic portals

Suppose some magical civilization on Earth-like planet can create portals. Any given portal entrances are spherical surfaces of the same radius. Any particle enters one sphere and exits another in the ...
1
vote
1answer
74 views

Alternate history where Italy finds oil [closed]

One of the most important resources in the world in the modern era has been oil, but arguably at no time more than during WW2 where many of the Axis' plans revolved around the procurement of a steady ...
8
votes
4answers
286 views

How would a 4th trimester affect human development?

Newborn humans are born in a very undeveloped stage compared to other mammals. This is because if they stayed any longer in the mother, their head would become too big to fit through the birth canal. ...
5
votes
5answers
269 views

What could explain this unique “fruit” tree?

Our protagonist lives on one of a group of remote islands where she makes her living harvesting a peculiar fruit. The edible part grows in the middle of liquid-filled sacks that hang near the top of ...
5
votes
4answers
366 views

A fictional island on Earth with “longer” springs and autumns

I want to write a story on Earth as it is now, with the sole exception of one large island nation. I plan to introduce elements of mysticism into the story as well, but I would like to keep these ...

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