All Questions

0
votes
2answers
123 views

Can a human born & raised in zero gee survive on a earth like planet for a short while

I've been toying with an idea of a epic space fantasy where a certain area of the milky way is controlled by decedents of humanity that are born, live & die in spaceships, said "ngees" as the "...
8
votes
4answers
211 views

Propulsion Systems

In my world, 500 years in the future, my population fits anti-gravity engines to salvaged boats as a form of transport. These transports fly close to the Earth's surface and are powered by a highly ...
3
votes
3answers
402 views

How to distinguish easily different soldier of ww2? [closed]

Not sure if it's on topic. I and some friends are doing a short movie, just for fun. The theme is ww2, and we have some soldier costumes, but they will be the same for all soldiers, so German, soviet ...
1
vote
3answers
74 views

Types of life on a planet in a sun-synchronous orbit?

Basically, a sun-synchronous orbit is where one side of an object is always facing a star as it revolves around it (much like our Moon is, which is where the phrase 'dark side of the moon' originates')...
5
votes
2answers
49 views

What would Define Ecosystems in a “Frozen Moon with Ocean” World

What factors would influence ecosystem development in an ocean on an ice world? It is thought that several moons in our solar system (e.g. Europa) may have significant oceans under their icy crusts. ...
3
votes
3answers
166 views

Geological Explanation for an Unusually Temperate Northern Mountain Valley

So I'm working on a home-brew D&D setting and I have this idea for the my campaign to take place in a large isolated Valley completely surrounded by mountains. I also had the idea to have these ...
13
votes
6answers
381 views

Could just a brilliant idea advance science by decades, or even centuries?

Inspired by this story, I started thinking. Let's say we have a person, from the modern day, who miraculously gets a superpower: He can rewind time, but retain his own memories. He can rewind all the ...
4
votes
3answers
222 views

How could my hard telekinesis work?

So, in my setting, telekinesis is divided into two sub-fields: Soft telekinesis allows for precise manipulation of objects but doesn't pack a punch. Newton's third law is negligible for this type. ...
26
votes
28answers
9k views

What would be the most expensive material to an intergalactic society?

Imagine an intergalactic society that has the following abilities\tech: Warp drive allows trips between stars in days and galaxies in weeks. Able to live in spaceships for long time without health ...
18
votes
8answers
4k views

Use Mercury as quenching liquid for swords?

There is a really nice question about quenching swords in dragon blood: Quenching swords in dragon blood; why? That made me curious about a more realistic example: Mercury Could this substance be ...
12
votes
8answers
3k views

How would an energy-based “projectile” blow up a spaceship?

I have noticed this in many fictions: during a battle between spaceships exchanging fire in empty space, a pulse of laser fire hits the hull and the entire spaceship explodes into many pieces. Is ...
5
votes
5answers
255 views

Armor for a humanoid snake

My world is medieval-ish in terms of technology level. While there is magic, it's not at all enchantment-like so any armor should be able to be naturally produced. In this world is a humanoid snake ...
4
votes
1answer
49 views

Orbital Resonance & Tidal Locking

I'm building a habitable world tidally locked to a red dwarf star. In order to affect a tide and other weather patterns I was going to have another planet closer to the star that has an orbital ...
-2
votes
2answers
102 views

Rules for Early Migration [closed]

So far, I have created a natural world, and I'm starting to think about putting a history of human interactions in it. First I'm going to start with the early history. That includes early migration, ...
3
votes
8answers
308 views

Tactics for society with indestructible material

I'm thinking of creating a society with an indestructible material at its disposal, with molecular bonds impossible to break once it has been synthesized and cast. How would a society using this ...
7
votes
2answers
66 views

Feasibility of large and isolated swamp-like enviroment

For my world I would need a really large swamp (or similar kind of wetland). It should be about 200km in diameter, which should be quite possible given a large enough flat terrain and enough rain. ...
16
votes
6answers
2k views

Iron deposits mined from under the city

I would like to have a city sitting on top of a large iron deposit that will be mined by the inhabitants of the city. Is that feasible for them? Won't the city collapse under the mines? Are there some ...
3
votes
1answer
96 views

Weather and climate during the next Ice Age

I have a short story series, it is set thousands of years in the future during the next ice age. Humanity and their governments reside along the equator and in parts of the Southern Hemisphere. ...
15
votes
7answers
463 views

Will food logistics limit the population of a civilization of obligate carnivores with modern technology?

I'm imagining a world populated with a species of intelligent, social, and "modern" (in terms of technology) humanoids. For the purposes of this question, they and their world can be near identical ...
9
votes
4answers
790 views

Are mobile cities justifiable in sci-fi settings?

Mobile cities are a common sci-fi setting. They are a staple ingredient in novels like "Mortal engine quartet" and "The inverted world" Plot set aside, what justifies mobile cities on land? Giant ...
4
votes
1answer
71 views

Increasing potential energy with ability thought experiment

While recently reading a physics textbook and thinking about magic systems, I tried to perform a thought experiment I had problems with concluding, so I thought of asking for help. Here I explain the ...
6
votes
1answer
152 views

How would you build a realistic Le Palm D'Orbit?

I was watching futurama yesterday and the Le Palm D'Orbit struck me as a fun concept. How would you go about building a orbital restaurant like the Le Palm? What kinda shape would allow the space ...
-1
votes
1answer
128 views

What would the implications be if all terrestrial lead was gold? [closed]

At some point before life crawled out of the ocean, some alien alchemist managed to turn all of the lead on the earth into gold. Galena becomes some sort of Electrum, and any existing Anglesite and ...
52
votes
19answers
11k views

How do spaceships determine each other's mass in space?

Set in the distant future, space travel becomes prominent and cheap. I can imagine each spaceship would have a multitude array of sensors to track distance and relative position in space. Is there a ...
8
votes
4answers
209 views

Microfracture in the ship's structure: good enough excuse to strand my characters? [closed]

I have the idea to have the engineer of a spaceship discover a "microfracture" in the ship's key structural framework (that was overlooked when prior battle damage was fixed) that has been slowly ...
14
votes
13answers
7k views

How do you make a gun that shoots melee weapons and/or swords?

In my industrial-punk-with-airships setting, I think it would be cool to have ship-mounted and personal-use ranged weapons that shoot swords, axes, glaives, or other heavy melee weapons. I'd like this ...
20
votes
11answers
5k views

An Undercover Army

Suppose you want to invade Russia. But, beating it in a conventional or nuclear war isn't possible for your people for some reason. What if, instead, you line up 500,000 soldiers to move to Russia ...
0
votes
4answers
163 views

What are some of the reasons that a dwarf planet might be reclassified as a planet?

I am thinking of a scenario in which a dwarf planet, previously declared as a planet, is reclassified as a planet. What could possibly cause this? Could any possible mineral findings cause this, ...
8
votes
1answer
123 views

Determining Planet rotation period that would allow for global Wind Cell

I'm trying to figure out how quickly a planet could rotate while also having a single air flow cell, such as Hadley cells, that would circle from hot pole to cold pole, etc. as in the case of Tidally ...
4
votes
0answers
73 views

How to reduce the threat to life of a nocturnal parasite-like creature [closed]

In this world there is a giant cloud of dust permanently on top of this continent, it makes it hard for sunlight to reach said continent, also there are only two giant continents on each side of the ...
3
votes
2answers
114 views

Transparent Materials for Creating Martian Dome Ceilings

What options exist it any, for a radiation resistant, transparent, and durable material that could theoretically be used for a ceiling of a martian dome?
8
votes
9answers
663 views

What could be a means to defeat a child’s nightmare? [closed]

In my world, there is a monster that materializes as a childhood nightmare (nothing specific, just this general fear children feel when they are alone in the dark). I wonder what would be a nice way ...
3
votes
1answer
147 views

What would be the implications of an ocean made from blood on the world? [closed]

In my world of Ulhe rather than having saltwater between continents the oceans are filled with the blood of a god. Besides being blue the blood has similar physical properties to human blood. It is ...
1
vote
0answers
43 views

What's the elemental form used in conjuring a super power/ability? [closed]

Example: kinetic energy used for psychic abilities and chakra for ninjas and so on. What more forms are there? If a knight(mage/magical knight) were to use his 'superpowers', what form of energy ...
-5
votes
2answers
191 views

If the universe turns out to be infinite does that mean that the multiverse isn't real? [closed]

Let's say that scientists somehow discover that the universe is infinite. In particular, they say that after the big bang, the universe expanded everywhere. In that case, if the universe is infinite ...
4
votes
4answers
550 views

A world without atoms? [closed]

Well, not exactly: the world is still made of atoms, like (we think) our world is. But for some reason, there was no Democritus or Leukipo in this world, and, on the contrary, the mainstream ...
6
votes
2answers
273 views

Would there still be land if the amount of water in the oceans was doubled?

A portal to another Earth in a parallel universe is open at the bottom of the Ocean and all the water is moving to the new Earth in the form of a waterfall in the middle of the Atlantic. The form of ...
7
votes
5answers
161 views

How should a ship call for help on a sparsely populated planet orbiting a flare star?

Technological level - similar to contemporary. Yes, I mean a watercraft, mostly big cargo carrying ships. I mean only calling for help while being in middle of ocean and not being within line of sight ...
1
vote
1answer
130 views

How the orbit of Earth changes if it has the double of water in the ocean? [closed]

A portal to another Earth in a parallel universe is open at the bottom of the Ocean and all the water is moving to the new Earth in the form of a waterfall in the middle of the Atlantic. The form of ...
5
votes
3answers
167 views

Mythical dragon diet

Would it be realistically possible for a firebreathing dragon to exist on an omnivore diet, but only eat fish as the main source of meat? The dragon is at this time in my story, a juvenile and can ...
2
votes
3answers
162 views

What would a meteorite have to be made of so that the sun became blocked for millenia?

I want to make my meteorite hit the Earth, after which the impact debris and ash blocks the sun just enough to make agriculture no longer feasible.
-3
votes
3answers
113 views

Earth like planet with two moon like satellites

I was thinking about this world with different ancient factions on war. The war caused both of them and most life on the planet to die, I was thinking about one of the moons getting shattered as a ...
7
votes
2answers
168 views

Unearthing a landfill 50-100 years later [closed]

I am working on a post-apocalyptic world with relatively advanced small-scale militaries. In what ways are landfills useful as sources of rare earth metals, glass, or other materials? Edit: Mostly ...
-1
votes
1answer
89 views

Realistically describe the day-to-day of a terrorist organization [closed]

I have been wanting to write a story for a while which would feature a newly-created terrorist group in a society similar to today's society in the US or the EU. While I have already outlined the ...
9
votes
2answers
264 views

Dredging in a fantasy setting

So, I am setting up a world for a DND campaign in which, through a magical accident in the past, the face of the globe is covered in ocean, all except for a few tiny islands where the highest mountain ...
0
votes
0answers
58 views

Mass human die off [duplicate]

If there was a mass human die off, let's say due to a super-flu pandemic, what would be the greatest danger to the survivors in regards to dealing with bodies? Typhoid? Any other secondary diseases? ...
36
votes
11answers
10k views

Can a space-faring robot still function over a billion years?

This short story, which I've already written, is set in the FAR, FAR FUTURE, where a robotic space probe is exploring as much of the known universe as it can, despite its AI not knowing if its ...
5
votes
3answers
170 views

A character who self-inflicts damage to become stronger/more effective

What is a good term to describe a characteristic of wounding ones self in order to heighten your damage inflicting abilities? Side note: I need this character mainly as a foil to another character ...
0
votes
1answer
80 views

What are the implications of a race with multiple personalities [closed]

In my universe there is a race of proto-humans known as legionaries. They have a are a minority group and used to be even smaller, only living on one planet in the past. This race used to give birth ...
11
votes
5answers
2k views

What could trigger powerful quakes on icy world?

Imagine a planet orbiting a star some billions of lightyears away from us, the planet is 4 times the mass of Earth and is covered with ice 100km thick on average. It is believed that liquid ocean ...

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