All Questions

11
votes
8answers
148 views

How to get cool night-vision without lame drawbacks?

In this scenario, I would like to focus specifically on humanoids (read: human shaped blinking eyes, protected by eye-lashes and evolved in a waterless environment and fitting human eyesockets, from ...
3
votes
2answers
116 views

Body plan of a 4D human-analog?

I am attempting to design aliens that live in a universe with a 4+1 space-time--i.e., a universe with four orthogonal spatial dimensions, rather than three, in addition to a fifth time dimension. In ...
0
votes
0answers
37 views

How many people can you feed per cubic meter? [duplicate]

With top notch existing technology (need not be currently industrially used, existing research application sufficient) and no regard for (external) ecology, economics or politics, we'll build a ...
9
votes
7answers
563 views

What reason would an alien civilization have for building a Dyson Sphere (or Swarm) if cheap Nuclear fusion is available?

The Dyson Dilemma states that every civilization of a great enough development stage will want to capture all of the energy from it's home star and surround it with a Dyson Swarm that uses solar ...
3
votes
0answers
52 views

Useable life span of different types of plastic and polymer [on hold]

OK folks - here's one for you petrochemical types: World is set 200 years post an apocalypse that wipes the global population back to about 280 million (the population of the world circa 1000AD). ...
-1
votes
0answers
66 views

What Gravity does the Sun affect items with at the distance of 1 AU? [on hold]

At the surface of the Earth, the force of gravity is defined as 1 G. I am wondering what gravitational force the sun excerts at the distance of 1 AU (the distance Earth is at). Imagine it like this; ...
-1
votes
2answers
66 views

Would an alien on Earth have an impact on its immediate environment in unexpected/unwitting ways? [on hold]

Examples: Acid erosion to things it touches. Fluctuations in electricity. Spread of disease. Lack of immunity to certain diseases.
3
votes
3answers
3k views

What could exist inside and between the walls of a Dyson Sphere?

According to FutureTimeline.net, A Dyson sphere could be built around the solar system around the year 3100 when the world reach the Kardashev type 2 scale. This is what is written there about the ...
3
votes
4answers
157 views

Nanobots that search and destroy cells with damaged mitochondrion

I read somewhere that scientists are trying to create nanobots carrying functional mitochondria to search out cancer cells and restart apoptosis. Instead of trying to create nanobots with a fully ...
0
votes
0answers
72 views

Best weapons for warriors who are extremely strong? [duplicate]

The ruling caste of my empire consists of the descendants of gods. Although they are comparatively small in number, they play an important role in the military. They are extremely strong compared to ...
7
votes
5answers
150 views

Geothermal Oasis Alternatives on Ice Planet

I have an Earth analog that is nearly completely covered in ice and glaciers. I want to have oases of warmth scattered across the planet. These oases aren't tropical by any means, having just enough ...
13
votes
5answers
5k views

How large would a mega structure have to be to host 1 billion people indefinitely?

Ruins of buildings, abandoned cities and suburbs dot the coasts of Earth's landmasses, inhabited by wild animals and the pieces of a once vibrant civilization. The oceans are relatively empty, the ...
-1
votes
2answers
91 views

How can you make water a solid that is not ice [on hold]

I have made water into ice but is there a way to make it a solid without freezing it or somehow turning it into ice?
1
vote
1answer
194 views

How quickly could we reach 1 Trillion people? [on hold]

Ok, first let me explain who I mean by "we". The human race is currently at 7 billion people, but we are plagued by war, disease and many other things that hold us back and disrupt our population ...
-3
votes
0answers
87 views

what is a negative charge and how is it made [on hold]

When I state negative charge I mean a negative charge that you will find in electrons, please explain it in simple terms when possible to allow a better understanding of what you mean as I have not ...
-2
votes
1answer
158 views

What is the opposite of lightning? [on hold]

I want to know what is the opposite of lightning. To give you some background, it has to be something that makes up a large aspect of the universe and cannot be anything in this list: space, time, ...
27
votes
15answers
6k views

How would modern naval warfare have to have developed differently for battleships to still be relevant in the 21st century?

So basically, battleships are awesome. I am interested in creating a setting where they were never superseded in their role of long-range command vessels and fire support by aircraft carriers, ...
-2
votes
0answers
65 views

Can positive lighting and negative electricity be two separate elements [on hold]

So I tried to find the opposite of lightning that wasn't already in my list (I'm not gonna list that as it is not necessary for the question)so then I wondered if I could just split lightning in two ...
-2
votes
1answer
99 views

Dig a hole to China [duplicate]

Every young kid has the dream at some point in their life of digging a hole to the other side of the world. With today's technology and an unlimited budget, would it be possible to create a tunnel ...
7
votes
6answers
2k views

How to maintain a closed environment for one person for a long period of time

Background: In the early 2020s a magical life-extending "elixir" is created but is in short supply. However, a very reckless individual steals most of the US's supply and drinks a sufficient amount of ...
2
votes
0answers
86 views

How viable would it be for all women to be telepathic? [on hold]

Supposing that telepathy is possible in the first place, how possible would it be for our current world to exist given that all women are telepathic, and men don't know this. How would this societal ...
1
vote
2answers
99 views

Ecological balance in a pleistocene+ world

So a friend is working on a worldbuilding/rpg project and I'm "beta-testing". He drew up an earth-like map and set the players start locations. Then I ask him about fauna. Will it be modern earth? ...
5
votes
1answer
165 views

Acceleration/Deceleration equation for travel within a solar system

Basics: There is a wormhole in a fixed position within a solar system. It is roughly 40 million miles from the orbit of the habitable planet, which kind of mimics Earth (roughly 12 month solar orbit ...
27
votes
10answers
7k views

How many people are necessary to maintain modern civilisation?

Modern Earth; a series of connected events (natural disasters, mass migration, drug-resistant pandemic, collapse in biodiversity, armed conflict) have led to a significant reduction in human ...
0
votes
0answers
49 views

How Would Psychological Energy Physiclally Manifest into the World? [on hold]

How would you explain a phenomenon where a person’s world begins taking on the form of their psychological energy? This happens in horror games sometimes. Silent Hill being one of them. This also ...
21
votes
5answers
3k views

Designing a magic-compatible polearm

The people in my story's universe all have various magical powers, and if they want the effects of these powers to extend to their clothes or equipment, said equipment needs to be designed to a few ...
0
votes
0answers
66 views

Is a vacuum rockoon economically feasible? [on hold]

Rockoons are basically large helium or hydrogen balloons that carry your payload launch vehicle to a height of say 40 km. Following this the launch vehicle detaches and launches conventionally using ...
3
votes
2answers
195 views

How long would it take a single person to mine and refine ore necessary to smith with?

So the backstory is I am DM-ing a 5e D&D game for my players; I have just given them a forge that makes magical items if it uses a certain ore from inside the mine it is in. They have 1 dwarf who ...
3
votes
7answers
865 views

How could a tree survive a volcanic blast?

Background I am working on a Role Play Video game, and I have a particular island called Morogar in my medieval fantasy. (Magic and Mythical Beasts run wild). Originally an island with forests and a ...
5
votes
5answers
184 views

Logical Location for my Secure Martian Datacenter

Minutes of the DatadyneTM board meeting, May 7, 2037 Members of the board called to order by Chair Mykyta Coetzee. Chair address begins. … There is no more lucrative opportunity ...
11
votes
4answers
2k views

Where should a runway for a spaceplane be located?

If a spaceplane like the Rockwell X-30 existed and was flying to a location in geostationary orbit, would it be substantially more efficient to take off from a runaway at the equator, or would it not ...
0
votes
0answers
68 views

Time-travel and its limits due to disease [on hold]

If a human were to go back in history on Earth he would not have the protection of incompatible biochemistries like he would if he traveled to an alien planet but would meet the ancestors of our ...
-1
votes
11answers
3k views

How can a clan of females defend themselves in the ancient world against marauding bands? [on hold]

In this setting, the family unit is based around a clan system. An individual's wealth and status is related to the clan they are born in, and its ancestry is based on matrilineal lines. Marriage does ...
5
votes
3answers
236 views

What jobs would people work in a frontier railroad town? [on hold]

What would people do in 1860s railroad towns? In a place similar to frontier America, it seems towns are built around very clear purposes. A majority of people would follow the town specific ...
0
votes
3answers
112 views

How might wizards figure out how to walk on the moon? [on hold]

A group of wizards is currently planning a trip to the moon to study why it makes werewolves happen. They plan to teleport to the lunar surface, do a few hours of investigation (e.g. watch samples of ...
3
votes
4answers
158 views

What plant life and resources could humans consume if colonies were established on the ocean floor?

I'm interested in creating some construct of a society in the Twilight and Midnight zones of the ocean. By what means could they mine, farm, and trade in what is suppose to be a more futuristic ...
6
votes
2answers
137 views

If Earth's Oceans Were as Deep as Europa's

Earth's deepest point, the Challenger Deep, is almost seven miles below sea level. By contrast, Europa is smaller than even Earth's moon, yet its oceans are anywhere between 40-100 miles deep! So the ...
0
votes
0answers
66 views

Would a food industry exist in a society where only humanoid robots and androids live? [on hold]

In my sci-fi stuff, there is a metropolis that only robots can live in and they eat food like humans. They have digestive systems. This is an advantage over humans because robots can eat however much ...
8
votes
6answers
338 views

What would be the “cheapest” non-rocket solution to getting cargo to and from Earth's surface?

Prometheus, your friendly neighborhood mega corp, has done it: dragged that pesky asteroid near Earth's orbit. Now with a rich source of ore right in Earth's orbit Prometheus is looking to improve its ...
7
votes
4answers
158 views

How big could a land-dwelling arthropod get if it wasn’t limited by oxygen consumption?

Insects and other land-based Arthropoda are stuck at the size they are due to how inefficient their respiratory system is. They were able to reach the size they did in the Carboniferous period because ...
-1
votes
0answers
70 views

Which tools do we need to develop to get from stoneage to the age of semiconductors [on hold]

For me it is astonishing that every tool we own is the result of a evolution of tools. Humans started to beat some rocks with other rocks to create more sharp rocks and now we have semiconductors. ...
32
votes
28answers
5k views

Justifying Affordable Bespoke Spaceships

Any story about an independent, self-owned tramp spaceship crew tends to implicitly or explicitly raise the question of how the crew got a spaceship, how it afforded it, and why it doesn't just sell ...
3
votes
2answers
157 views

If a moon shattered into pieces, what would happen?

Say I have a planet with 10-20 moons of varying sizes orbiting it. If one of these moons were to explode/shatter into tiny pieces (I know this is probably impossible, but if we pretended it were ...
63
votes
10answers
10k views

How much steel armor can you wear and still be able to swim?

I know there are many historical accounts of soldiers trying to cross a body of water and drowning, but this got me thinking how much of this was due to panic, lack of swimming skills, water currents ...
5
votes
2answers
161 views

What's the disease?

In a near-future sci-fi world, I described a disease with the following characteristics: Affects human female children (not necessarily exclusively). Is a neurodegenerative or similar disorder, ...
-10
votes
0answers
82 views

How would a big breasted woman feel if all men had bigger chest than her breasts? [on hold]

I would like to wrire a science fiction story which a woman is big breasted like Christina Hendricks or Denise Milani and she went to a city that all men are genetically enginered to have big and ...
8
votes
2answers
190 views

Is it possible for a creature to exist that uses lye instead of acid to digest food?

As far as I could gather the digestion relies on enzymes which in turn set requirements for pH. Is it possible for an alien creature to have a different set of enzymes that require basic environment ...
0
votes
1answer
59 views

Which one of these two technologies would be more difficult to create: matter replicators or matter teleportation? [on hold]

It seems logical that would be more difficult to create a new object out of nothing rather than scanning all an object or a person particles and atoms and then transferring them into another location ...
8
votes
3answers
168 views

Catastrophic geology

What would happen to an earth-like planet where an event caused a large (think, the size of the Caribbean tectonic plate) section of the crust to get peeled away, exposing the upper mantle for a ...
19
votes
7answers
3k views

Are there examples of rowers who also fought?

In my world I plan to have a naval army with boats that are driven by manpower. The rowers are not slaves but are also soldiers. However, I am struggling to find examples of times in history where ...

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