Questions tagged [science-fiction]

For questions relating to worlds with a setting of common science-fiction.

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2
votes
3answers
93 views

Synthetic Daylight Cycle on a Structure too large for one Sun?

In this universe, an advanced race of aliens have constructed the largest object in the universe other than the universe itself, which is about 40,000,000 lightyears tall (don't worry about the ...
6
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5answers
1k views

Could a mechanical bird with the wingspan of Vermont be able to fly?

I know it sounds kinda stupid, but I’m trying to create a really ominous figure that would always watch the player in this a hypothetical video game that I’m writing with my dad. We both agreed that ...
4
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8answers
518 views

The Source of Gravity Based Destruction

The Background: It's the year 4000 (or whatever), and mankind has cheated FTL travel. As a result of this 'cheating' rather than solving, however, they can't easily go beyond their borders. However,...
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2answers
65 views

How long would it take before a global research effort could replicate alien technology? [closed]

It's the distant future of 2000 and for several years a group of renegade aliens have been hiding out on Earth, which is treated by the more advanced races of the galaxy as a nature perserve. However ...
9
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4answers
156 views

Sand Plankton. Is it possible?

In many Sci Fi and Fantasy worlds, the deserts are filled with giant megafauna that swim through dunes of loose sand. The issue with this depiction of course is not just the size of said sand ...
-1
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2answers
147 views

Proving to the past that I am from the future [closed]

Let's say I've been able to travel in time and I am back in the past (just by a few years or even centuries). I do not have any modern gadgets or even modern clothes, just me and my 21st century mind. ...
0
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0answers
45 views

Will our creator terminate us when the reason of our existence is no longer needed or completed? Let's take example of AI [closed]

TL;DR : Let's say we are created to do one thing and we completed that, what will our creator do with us then? terminate / eliminate us? Example of Artificial Intelligence : Let's say we made a AI ...
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0answers
79 views

Fusion Orion Drive

Orion drives are awesome. Nobody can deny that. They are however a little outdated and still use pure fission pulse units. Obviously they are in need of an upgrade! A good place to start would be ...
5
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1answer
84 views

Could a land mass reasonably exist where I want it on my earth-like binary planet? [closed]

I've been doing a lot of research lately on my binary planet system for the series I'm writing. Some details I've already worked out: The system's star is 0.6 solar masses, 0.8 solar radii and 0.3 ...
5
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10answers
2k views

Are railguns in space intended to be something that causes massive kinetic damage upon collision? Why wouldn't a railgun shot go right through?

Using the search engine here and on Google is not leading me to any answers. Assume no shields here or any unobtanium technologies. What happens upon impact of a projectile fired out of a railgun ...
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8answers
2k views

With as much scientific accuracy as possible, how would chemicals injected in one's body be removed?

I am currently writing the world, setting and characters for a project of mine called the ORION Project - a story set in a dystopian America in the near future of 2050, where the government has taken ...
0
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0answers
37 views

What would be a good reason for a spaceship engine failure [closed]

I have a character whose father dies in a spaceship as he goes after her for doing something reckless. I'd ideally like it if the cause was half her fault but mostly the fault of the ship, however, I ...
2
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2answers
93 views

The Hydrolock - How to build a deep sea docking system?

How do you build a docking system at deep sea pressures? Example a Challenger Deep Sea Base at 10,000 meters seawater or approximately 1,000 atmospheres?
13
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9answers
1k views

Ways to make contact with aliens on a much larger size scale?

One answer to the question of "Why don't we see any aliens?" prompted me to consider: The computer was a comparatively simple design, what the natives would call “single core” Von Neumann ...
17
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10answers
4k views

Are there alternatives to mining asteroids/planets for obtaining matter?

I am reading We are Legion, by Dennis E. Taylor, in which humanity has developed the so-called 3D atom printer, briefly described as: 3D printers delivered individual atoms using a number of tuned ...
6
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4answers
1k views

Defense procedures in case of encountering robotic alien locusts

The Swarm are a species of semi-intelligent insectlike alien robot evolved from a self-upgrading machine designed to clean space junk. They are widely known in the galaxy and regarded as a threat, yet ...
23
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20answers
4k views

How would a sci-fi matter replicator create a pressurised aerosol can?

Ensign James wakes up on the not-enterprise. Yawns. Showers, and gets dressed ready for work. Only to discover gasp, he's out of deodorant. He walks to the matter replicator and orders a can of "...
13
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5answers
4k views

Is it possible to make a “safe” electromagnetic “jet engine” using extremely long wavelengths?

Here's the idea: Building a "jet fighter" that can operate in extended combat conditions with no atmosphere without losing air superiority in atmosphere. It's not going to have both ...
3
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4answers
1k views

Warp drives without exotic matter?

Taking into account all of the developments in the alcubierre warp drive theory including the new calculations by Harold White. Are their any plausible/theoretical ways to generate a warp bubble ...
7
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8answers
4k views

Could an jet engine that uses water as fuel work?

Could a jet engine that uses water work? The idea is that water is sucked in, compressed, and boiled instantly by a dozen mirror focused industrial grade lasers. The resulting super heated gases would ...
0
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1answer
87 views

If the sun stopped shining, could we survive? [duplicate]

As much as some people say that the sun is evil, it is a very important source of energy to us, so that if we concentrated 1% of the sun's power, we could power the whole world during 50 years. If the ...
2
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1answer
137 views

Maximum shell world planet size with earth-like conditions

I am trying to work out the theoretical limits on the size of a shell world (made with orbital rings constructed around a black hole). I have the following constraints: The light to the planet must ...
5
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4answers
245 views

Implications of post-cognition on societies

There are fictions where we can travel to the past, but it often raises causality paradoxes. There are others where we can see into the future, and it has also some implication on free will. But what ...
6
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6answers
2k views

Gravity increases with distance! Possiblities? [closed]

So I was thinking of a world inside a black hole. In this inside black hole world, as you move from the event horizon to the center of the black hole gravity decreases. So you can enter the event ...
7
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1answer
272 views

What would happen to a planet with a extremely high oxygen content in the atmosphere

A race of mine terraforms planets to cater to their need for a higher atmospheric oxygen content of about 45% (They are insect like, who would've imagined), so I was wondering how it would affect a ...
3
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1answer
104 views

A civilization running simulations to select intellegences for space missions

My protagonist is a magician from Sword and Sorcery world with a soft magic system which wakes up in a spacecraft with a non intelligent voice interface which does exactly as told without any regard ...
5
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4answers
296 views

What are limitations to 3D printing in the near future?

Extrapolating ~10-20 years from our current technology, what are some limitations with 3-D printing? Is the ability to print any type of matter in reach, or are there some fundamental issues that ...
1
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1answer
71 views

Inertia Heightening/Dampening Field [closed]

So you have a Force Field around you that can Heighten/Dampen different and multiple inertia at different degrees of heighten & dampening and even negation what all can you do with it. And lets ...
-3
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1answer
119 views

Creating Genetically Engineered Individuals [closed]

Let's say I want to make a genetically engineered being, who doesn't have iron-based blood, and is an improvement on humans across the board: strictly stronger, more resilient, greater lung capacity, ...
1
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3answers
156 views

Humans in a world without trees [closed]

How do you think humans would develop technologically in a world without trees? If all the other requirements of basic survival like food, oxygen, etc are met? There are animals around but no ...
1
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2answers
106 views

Climate in an Alderson Disk

First, i want to accept that alderson disks are basically imposible to create, due to a variety of reasons. With that out of the way, i want to ask what would be the hypothetical climate of an ...
1
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1answer
71 views

More power, more plasma?

So in looking into plasma tech for a book, I looked at plasma cutters. Multiple articles I read suggested that after inverting, the input power requires around 13.4kw at around 80 amps to turn an ...
0
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1answer
86 views

The ultimate far-future fortress [closed]

In the year 4000, a single gigantic government authority controls the world. In the dystopian capital mega-city of "X" lies their core center of activity, where the highest of ranking ...
3
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6answers
141 views

How do I stop my near future city state from flying past a certain height and distance or sending up sats, but keep radio communications intact [closed]

A near future large city state is surrounded by a far more massive forest that is semi sentient. How do I stop them from sending up satellites, or sending up weather balloons high enough so that they ...
31
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7answers
5k views

When my city is miles high, where do the utility lines go?

Various futuristic novels and movies have posited the existence of the mega-city; a city in the clouds built up hundreds if not thousands of meters above the surface area below. Examples are Coruscant ...
1
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2answers
140 views

The Ideal Ecosystem for a Self-Sufficient Space Station

Oh no, Earth has exploded! Luckily, we have a backup plan: a single space station and enough storage to keep DNA samples of: Humans, 5 plant species, 5 vertebrate species, 5 invertibrate species ...
3
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2answers
98 views

How Would An Advanced Alien Civilization Expand the Lifespans of Giant Stars (Nearly) Exponentially? [closed]

Long ago, in some distant galaxy, an advanced civilization had turned a small, young elliptical galaxy into their own astronomical playground. They seemed to have come up with a way to prolong ...
1
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0answers
56 views

What if WW1 never happened? [closed]

After learning more about the assassination of Franz Ferdinand I wondered, what would have happened, if he never had been shot. Similar to the man in the high castle, I want to explore an alternative ...
6
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6answers
2k views

How do I make my soldiers jump higher

I need a mechanical way to make my soldiers who are combat explorers in a forest to be able to jump higher than normal. They will be equipped with a variety of weapons from normal hand held weapons up ...
10
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9answers
1k views

FTL in a relativistic universe: can my scheme be exploited to make a time-machine?

The introduction of FTL travel/communication in a relativistic universe may effectively be equal to having a time-machine with all the problems that may entail for causality. I would like to avoid ...
-2
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0answers
63 views

What kind of alternative or futuristic energy source would you come up with? [closed]

I'm writing a sci-fi novel and am having a hard time coming up with a new energy source that DOESN'T revolve around the widely popular "nuclear" option everyone favors so much. I've tried ...
-3
votes
1answer
80 views

A war for what’s left of space [duplicate]

My story is a space adventure, opera, war with an advanced alien race going to war with each other using this magic system the warring factions are the remnants of a Kardashev type 3. The biggest ...
5
votes
3answers
185 views

What environments wouldn't be present on a recently terraformed planet?

What environments wouldn't be present on a recently terraformed planet? Just to be clear: this hypothetical planet had no magnetic field and didn't have materials present on the surface required to ...
60
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20answers
8k views

Why would there be any use for sea shanties in space?

I understand that sea shanties were a type of work song, and often used to help sailors operate in sync with each other. They've survived as an art form, but so far as I know they don't have any ...
4
votes
2answers
153 views

Minimum Safe Distance From Planet-Destroying Event

Okay, I have this villain who's able to create supernova-like explosions from his body that release a total energy of 1.67x10^39 J, and the heroes stop him from destroying Earth by portalling him away ...
1
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2answers
141 views

Is This Living Planet Plausible?

My idea is an planet that is one living organism wrapped all around an rocky foundation. It orbits an sun of one solar mass, and has an Earthlike radius. Its albedo is about 20%, so it gets 1098.4 W/m^...
3
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2answers
129 views

Mechanical Energy Absorption

I’m in the process of creating an organism on a planet that has the ability to absorb mechanical energy directed at it and convert it into heat with a very high efficiency rate of over 70% only to ...
2
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2answers
118 views

How could a false memory machine work?

False memories are often used on science fiction, so my question is how could this work? best answer: It’s ok for it to be solely theorized, but the most developed method will be prefered machine ...
-4
votes
1answer
97 views

universal politics of alien warfare [closed]

My story is a space adventure, opera, war with an advanced alien race going to war with each other using this magic system plus FTL, iron stars, Dyson spheres but as I was world-building I realized I ...
1
vote
5answers
557 views

How can I implement time travel on a somewhat realistic way?

Requirements for answer: -hypothetically can work (I don’t care if it’s hard or energy expansive) Made by Mankind Can be used at any time preferably works for going to the past it’s enough if I ...

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