Questions tagged [science-based]

For questions that require plausible (better than suspension-of-disbelief) answers based on Real World science that are not necessarily constrained to the known limits of Real World science. Contrast with the hard-science, science-fiction and internal-consistency tags. This tag may not be used alone. This tag may not be used with the science-fiction, hard-science, or internal-consistency tags.

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1 vote
2 answers
125 views

If the current population of humanity along with necessities could fit on a spaceship, how large would that ship need to be?

Here's the picture. Earth is beyond saving and is too polluted to be habitable anymore. My plan is to have this ship built on the moon, using materials from our asteroid belt. A bit of a problem is, I'...
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1 vote
1 answer
38 views

What will be the impact of stone-eating bacteria on human architecture? [closed]

There is a world, similar to ours, but not entirely. In this world, there is a species of bacteria that eats stone. Actually, in our world, there are such bacteria also. It is called bioweathering and ...
8 votes
16 answers
1k views

How might derelict space ships/stations be only partially salvageable?

My setting is a fantasy where the average space-trekker subsides on scrapping derelict ships from a distant golden age in the past to maintain their own, with only the corporate rich being able to ...
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-1 votes
6 answers
218 views

Is it always possible to for a warrior to kill themself and die?

In my world, it is common that as a last resort warriors will kill themselves if they are going to lose a battle. This is because it is essentially a form respawning, as they will be reincarnated in ...
4 votes
7 answers
2k views

How can a species be fine with digesting poisons and toxins?

I have an alien species of roughly earthlike anatomy and biochemistry (so they can consume earth food, and humans would be able to digest their foods as well) These species have a trait that allows ...
1 vote
1 answer
100 views

could an equator-round elevator be possible for passing through rings of a planet to reach the moons?

I am developing a terrestrial, habitable planet with rings about the width of Uranus' rings. Not extremely thick, but still noticeable. I have heard that rings on planets would cause an inhabitable ...
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3 votes
1 answer
133 views

What is the timeframe for this abandoned space colony revert to a medieval society?

An outpost on a 2G (gravity) water planet (95% of the world's surface covered by oceans) becomes stranded / abandoned by the Galaxy Government, probably forever. The warp gate in orbit broke, nobody ...
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4 votes
6 answers
1k views

Countering Free-Electron Lidar?

In my hard sci-fi setting, there is a technology called free-electron lidar, usually deployed in space. Edit: Essentially, it is a lidar with the ability to change its laser frequency. One free-...
1 vote
3 answers
148 views

water producing creatures

I'm trying to create a desert planet, and I plan on having water be produced by slug-like beings that consume oxygen and hydrogen from the atmosphere and produce water as a by-product f their ...
-1 votes
0 answers
71 views

Are my alien muscles made of copper and zinc possible?

I decided to describe the evolution of scientifically plausible alien organisms and came up with a system for their muscles in the possible operation of which I have some doubts, so is it possible ...
5 votes
0 answers
64 views

What mechanism for the transmission of signals between neurons can be faster than our sodium-potassium?

I decided to describe the evolution of scientifically plausible alien creatures and thought about how alien neurons can transmit signals to each other and is it possible in theory some mechanism that ...
8 votes
8 answers
2k views

How to get the Lilim to breed true?

On my worlds of Earth, Ruquelis and Ersutiabu, there are three sexes relevant to this question, Men (XY male), Women (XX female) and Lilim (LX female), where X, Y and L are sex chromosomes. Lilim ...
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5 votes
4 answers
529 views

Justification for using Saturn as a future base for colonization

Despite being a gas giant, and being chilly cold, there are a few reasons I believe Saturn would be an ideal habitat for future colonisation, and here are a few justifications: Saturn actually has a ...
8 votes
8 answers
3k views

Hiding a Continent

I've been doing quite a bit of research on how to hide an entire continent (that's located on Earth, mind you) and I've only found one even slightly possible solution which is the following: prior to ...
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2 votes
2 answers
47 views

Saturnian Cloud Cities Pt. 4- How to deploy the cloud-city

This is my fourth question in the series Saturnian Cloud Cities. Click to see the previous question The diagram of the cloud city is given below, but I will try to describe it in a nutshell. The ...
3 votes
3 answers
146 views

Saturnian Cloud Cities Pt. 3- Wind Turbine Problems

This is my third question in the series "Saturnian Cloud Cities", the previous question is "Ice Harvester Planes" The Saturnian cloud city consists of a giant Titanium-Graphene ...
1 vote
3 answers
98 views

Would the articulations/joints/bearings of a bulletproof full-body suit be easily pierceable?

Context: This armour was designed to be a full-body "bulletproof" suit, only capable of stopping bullets from military assault rifles that have the same capabilities of today's ones. Of ...
  • 401
5 votes
3 answers
218 views

How to stop Jimmy’s (self-conscious) limbs from rebelling?

So Jimmy (the collective name for his brains) has this one-in-a-handwavium-amount blessing/curse. Instead of one central brain, his head, each arm, each leg, and his torso have independently ...
4 votes
3 answers
85 views

Saturnian Cloud Cities Pt. 2- Ice-harvester planes

This is my second question in the series Saturnian Cloud Cities. The first one is Would this concept for a cloud city on Saturn work?) So, I am not going into details about the cloud-city here in ...
2 votes
3 answers
123 views

What are potential avenues in advanced materials/manufacturing for light, high-strength parts for portable cannons, firearms and ammo, and armor?

In my setting, there's a faction known as International Front that combines guerilla and para-militarism with advanced technology (for a guerilla group). Their main goal is to fight and conquer the ...
3 votes
1 answer
133 views

Are high-density moons plausible beyond the frost line?

I have 3 gas giants in my system, 5.23, 10.97 and 15.14 AU respectively from a G3V star with .97 solar luminosity. Would the satellites of these worlds start higher density (rock-ice mix) and ...
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8 votes
1 answer
121 views

Giant mole-like creatures. Are more limbs for digging worth it?

The following creatures, in order, are a sandgroper, a mole cricket and a mole, all creatures that are well adapted for life underground: All of them converged into a similar bodyplan, with powerful, ...
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4 votes
2 answers
342 views

Island-hopping, gigantic-sized predator?

I wish to create the necessary/sufficient conditions for an island-hopping super predator. Relevant characteristics below: In terms of size, it is to be massive, perhaps akin to a Tyrannosaurus while ...
1 vote
1 answer
123 views

Can knowingly and willingly murdering someone interfere with a women's menstural cycle? [closed]

On Peacemaker, Harcourt, one of the characters, mentions that when she first killed someone, her periods stopped happening for quite a bit. My question is this: Just how realistic is that? ...
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11 votes
8 answers
3k views

What key invention allows the exploration of my hot humid world?

I want to know what key invention would allow my civilization to travel down to and explore its world at sea level. This is similar to my previous question* but this time does not assume metals are in ...
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7 votes
2 answers
554 views

How would prey animals adapt to large aerial predators?

Let's say the world's natural history evolved along much the same lines, but the modern species of large herbivores we're familiar with - ie cattle, deer, elephants, antelopes, etc - had to deal with ...
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-3 votes
3 answers
89 views

Mantle drills for harvesting geothermal energy

In the mid-2020s, scientists try to harvest geothermal energy, by using drill equipment that drill deep into the Earth's crust and into the mantle, so that the intense heat can be harvested by pumping ...
2 votes
0 answers
68 views

What would the climate of this map look like? [closed]

In this scenario, there is a binary star system comprised of one naturally-made star and another made by the hands of some mysterious hyperadvanced civilization. The latter is a white giant, an ...
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7 votes
1 answer
295 views

Support Equipment for a Time Machine

Okay, the time machine itself is science fiction. I've got some handwavium about transformation of Einsteinian equations and unconventional polarization of electromagnetic frequencies and so forth. ...
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5 votes
4 answers
680 views

Is there a way to turn plants into energy without burning them?

I'm thinking of an energy source where you could put organic life forms in and get out energy that could power something (edit: something that can be transported in a small space; where you can put ...
-3 votes
0 answers
51 views

Land-base on Venus

In the early 2030s, NASA sends some astronauts to Venus for study of land. Due to reasons I will not discuss, the bases are not cloud cities, but actually land-bases. The structure of the base is as ...
0 votes
2 answers
27 views

Solution to Ozone depletion-Stratospheric injection?

In the mid-2020s scientists have realized that although the ozone layer is recovering, it is only doing so at an alarming slow rate. So they come up with an solution. Many titanium tanks are put in a ...
-2 votes
0 answers
30 views

Blue is The new Red(animal Blood) [duplicate]

Since earth animals use Hemogolobin to create red blood cells,How can i make my animals Get the Haemocyanin To turn thier blood Blue?(by food? air? etc) ...
2 votes
2 answers
105 views

Would it be realistically possible for an Earth-like planet to have a "hidden" moon?

I essentially just want the moon to always be in shadow of its planet so that from the surface of the planet it cannot be seen at any time of day - might "appear" as a black orb that blocks ...
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-2 votes
1 answer
113 views

If human babies are born underdeveloped, how long would pregnancy need to be in order to be considered fully developed? [closed]

In my world there is a certain sapient species with height around 3 meters, whose bones are more durable than humans, meaning they can afford wider pelvis than most human women I personally believe ...
10 votes
1 answer
208 views

How large could an aerogel planet get?

Most of the world's lightest known materials are aerogels. In recent years, their mechanical strength has greatly improved, due to the creation of composites, crosslinked forms, and especially ...
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7 votes
5 answers
1k views

How can my fictional race of humans extend the area of their world they can explore?

This world is an alternate Earth similar size, mass and distance from its star to our Earth. The atmosphere is similar in composition to Earth except at 5000m altitude the pressure is two bar and the ...
  • 33.2k
-1 votes
1 answer
87 views

Quantitying religious concept [closed]

Once upon a time, there were people on a planet far away who believed that our galaxy was a brain. Each star would be a neuron. In the absence of wormholes and other ways to get around the speed of ...
10 votes
3 answers
1k views

Can a long retractable neck work with an exoskeleton?

In my world mostly composed of arthropods, I wanted one to fill a niche similar to that of a common snapping turtle (an ambush predator that extends its long neck to strike quickly at prey), and ...
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0 votes
0 answers
30 views

Can my visual system work? [duplicate]

I'm trying to design an eye for my squid-like organism, what I have thought is basically a human like-eye but with the retina being composed only of a layer of bacteria carrying the gene of rhodopsin ...
4 votes
2 answers
138 views

Could a double binary system support planets?

Disclaimer: I know that the term ‘double binary’ isn’t real (yet). Hypothetically, there is two pairs of binary systems with the center of gravity for the individual binaries are orbiting in a binary ...
-3 votes
4 answers
276 views

How long would it take an average person to climb an one-hundred and twenty billion feet tower? [closed]

I saw a recap of a film called Fall released this year. It is about 2 girls stuck on the 4th highest structure(supposedly) in the USA. It got me to thinking about very tall things and climbing them. I ...
0 votes
1 answer
128 views

Feasibility living tissue product

Once upon a time, there was a gang that wanted young women to infiltrate the upper class. Unfortunately due to genetic modification and better nutrition the elite was much taller two feet on average ...
10 votes
2 answers
3k views

Could a binary star system support life?

If we take an earth-sized planet with similar atmosphere, and put it into a P-type binary orbit, could it sustain human life? For sake of clarity, assume both stars are G-type stars and the planet is ...
4 votes
1 answer
110 views

How to calculate temperatures on my world given different pressures and altitudes

The fictional world is Earth-like with 1g gravity and similar solar radiation to Earth but the inhabitants only live on very high plateaus at around 5000m where the pressure is already 3bar. How do I ...
  • 33.2k
4 votes
1 answer
284 views

Super hot tropical forest

Consider an Earth like world except much hotter with extremely hot and wet tropical rain forests. Assuming 100% humidity, how hot might the alternate Earth tropics get and still support tree like ...
  • 33.2k
11 votes
10 answers
5k views

Under what conditions would a space battle involving a relatively large number of vessels be barely visible on the surface?

Imagine a space battle happening high above Earth (~25k miles, or ~40200 km). It's right above the observers who are standing on the planet's surface. Both armies have the same amount of spacecraft, ...
  • 13.8k
1 vote
2 answers
123 views

What would the recovery period for a five year coma look like? [closed]

So, I've been kicking around a sort-of "return from another world" idea for a bit now. Basically, the MC gets the crap kicked out of him and ends up in a deep coma with very little brain ...
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6 votes
10 answers
6k views

How can an alien civilization mostly stay as a Monarchy but still be advanced enough to travel around the Galaxy?

They have tried Democracy The civilization is very much similar to human civilizations but I want it to stay as a monarchy yet still have technology advanced enough to travel around the galaxy. Is it ...
6 votes
3 answers
243 views

A species that is warm-blooded when a juvenile, but cold-blooded (or at least lukewarm-blooded) when an adult [closed]

In my world, there is a species of squamates from the Toxicofera clade named dragons (their scientific name is Draco draco). Some of their characteristics include: In comparison to human beings, they ...

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