Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question.

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91 views

Of all methods of FTL travel (or as close as one can get to it), what would be the most feasible to have been invented in the next 100 years?

It's the late 2020's, and humanity has expressed an unprecedented and powerful renewal in the interest of space exploration. Sometime between then and the turn of the next century, a practical form of ...
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what would we look like in 5 billion years [closed]

Humanity has been around for a fairly short time compared to that of the existence of earth, and yet, humans have went from looking like apes to looking like what we are today. Recently, however, I’...
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3answers
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Would “land assist” technology be possible in real life?

In the game Call of Duty: Advanced Warfare, characters wear exoskeletons with an ability called "land assist", which allows them to slow down their fall using a jet of compressed air (or some specific ...
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1answer
63 views

Anatomically Correct Manticore

This is a submission for the Anatomically Correct Series some characteristics of the Manticore include: having a lion like body having wings are tetrapods having a scorpion like tail being ...
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0answers
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Anatomically Correct Qilin

This is a submission for the Anatomically Correct Series The Qilin or Kirin is commonly depicted as: having a reddish orange mane resembling a horse having a branch like horn being a dark seafoam ...
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0answers
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Anatomically Correct Flatwoods Monster

This is a submission for the Anatomically Correct Series Residing in West Virginia, the Flatwoods Monster is commonly depicted as: being 10 ft tall having a reddish face surrounded by a pointed hood ...
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2answers
86 views

Anatomically Correct Behemoth

This is a submission for the Anatomically Correct Series roaming vast deserts some characteristics of my Behemoths include: being slightly larger than Paraceratherium having longer forelimbs than ...
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2answers
61 views

Eusocial colonies as individual, sentient organisms

An idea I’m toying with for a sci-fi story is a species where the individual organisms are colonies of smaller eusocial organisms. The idea initially came from “hey if a bunch of single-celled ...
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3answers
90 views

For a species that prefers throwing large rocks at foes, what else would those developed muscle groups make them good at?

Context: I'm working on a fantasy setting and one of the races I want to include are cyclops. When I implement a race into my setting, I usually take one or two sources as the primary inspirations ...
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1answer
59 views

Anatomically correct Frieza?

This is a submission for the Anatomically Correct Series Frieza is a super villain in the Dragon Ball series that looks like a small biped humanoid with thick smooth pale white skin, a chestnut ...
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1answer
58 views

Anatomically Correct Loch Ness Monster

This is a submission for the Anatomically Correct Series The Loch Ness Monster is commonly depicted as: living in lakes/oceans having a long swan like neck sometimes peaks it's head out of the ...
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1answer
35 views

How might a group of hominids keep an accurate record of their history?

In my story Halflings and Goblins have a somewhat accurate knowledge of their history, despite being spread over multiple continents. Now for the longest time humans weren't that good at keeping ...
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1answer
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Design for a working Vibroblade

So, a common sword found in sci-fi (other than lightsabers) are the Vibroblades, swords that vibrate to increase the ease of cutting into other materials. With such a blade, one needs less effort to ...
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1answer
40 views

Possible explanation of amphibious abilities

Okay so i have this world that is inhabited by an alien race that outwardly is basically undistinguishable from an ordinary earth-human. Due to the specifics of this planet they live on they can ...
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4answers
164 views

Feasibility of a virus that causes its host to crave sex?

In the near future a man-made virus was released which caused a world wide epidemic in humans and animals , the virus completly shutsdown all cognitive functions in the brain leaving the host in a ...
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1answer
53 views

How to develop biological laser beam eyes?

Here a laser raptor Pew Pew'ing in its natural habitat and timeline. (From the Kung Fury movie) So I want to know how a biological organism can develop to spew laser beams through their eyes. What ...
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2answers
99 views

An entire aircraft carrier group utilizing the ground effect?

I’ve heard there was no upper limit for the size and weight of a ground effect vehicle. In my world, the people there wanted to design a quick response aircraft carrier that could reach anywhere ...
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2answers
103 views

Boron-based life

Body: Boron-based lifeforms that use ammonia as a solvent and respires methane & hydrogen, with an atmosphere of mostly methane, hydrogen, nitrogen and in smaller percentages, acetylene & ...
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2answers
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How do I preserve my Wendigo Prion?

Wendigo fever is a Prion (credit goes to SE is too politically correct for the idea) which is spread by the consumption of tainted meat. the main problem I have is to my knowledge Prions are solely ...
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6answers
122 views

Biological Explanations for Aging Stopping in a 100% Human Being

So there's this man that was born 1,000 years ago, but today he's still living and he's (biologically) 28 years old. He just stopped aging at that age. He is not immortal. He has been hurt in wars. ...
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1answer
111 views

What evolutionary pressures could lead to tree dwelling octopuses?

I'm creating a fictional world which includes tree dwelling octopuses that thrives in swamps and tropical rainforests. I'm wondering what evolutionary pressures could lead to the rise of such ...
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4answers
951 views

Can a crystal grow or propagate faster than 'c'?

We have, perhaps, all experienced those 'heat' packs wherein a local disturbance causes a crystal structure to rapidly dissipate through the medium, releasing heat in the process. Nothing really '...
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2answers
90 views

Would the Muroid Niche Be Occupied by Just One Clade?

The muroids are a superfamily of rodents consisting today of mice, rats, voles, hamsters, lemmings and gerbils. There are at least 1750 different species of them, proof apparent of their ...
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1answer
90 views

Building Island in Pacific Ocean by pouring continuous lava

I'm thinking to build an island by pouring lava into the ocean, with the advanced technology, around 40 years later, by making a special pipe connected to the ground (maybe near volcano/es) since the ...
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1answer
76 views

Bacteria can produce sulphuric acid with pH values of <1 Could a more complex organism use them?

Previously, I asked about the plausibility of a sulphuric acid dragon. As it turns out, the answer was right on Wikipedia, namely a. thiooxidans and the snottie Snottites are highly acidic biofilms ...
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3answers
124 views

New universal units [closed]

I'm working on a series and attempting to create a more universal set of units. For this post, I will simply ask this: Is it feasible to redefine the meter to be the distance light travels in 1 second ...
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1answer
87 views

What could be a plausible scientific explanation for a man who has skin made from rock and can manipulate the molecular structure of natural minerals?

Okay, so I want you to think of someone similar to Clayface here, only he's not limited to just clay. What I got for him so far is that he was once an ordinary man until a cluster of specifically-...
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2answers
86 views

Anatomically Correct Grootslang

This is a submission for the Anatomically Correct Series Residing in South Africa, the Grootslang is a creature of African folklore being depicted commonly as: Being 37 to 40 ft long having a cobra ...
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2answers
75 views

Anatomically Correct Kelpie

This is a submission for the Anatomically Correct Series Residing in Scotland, the Kelpie is a creature of Celtic folklore being depicted as: looking like a black horse residing in lakes and pools ...
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3answers
91 views

Sensors for a clockwork/fluidic robot?

So, mechanical computers are a thing, as are pneumatic and hydraulic actuators. Combining those ideas, it's not that hard to design simple purely-pneumatic/hydraulic robots--provide them with a ...
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4answers
255 views

Would it be possible with current rocketry to go from Earth to Mercury and then come back?

Leaving aside the matter of how well would humans fare on the surface of Mercury (we only have to factor in the weight of their life support: air, water, food and spacesuits), and assuming materials ...
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12answers
7k views

How might my futuristic interstellar civilisation have missed a Dyson swarm on their doorstep?

It's the future. The setting is about as "hard-ish sci-fi" as it is possible to be, with the one big exception of a viable FTL engine. Humans have began spreading out into the galaxy, colonising ...
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3answers
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What average global temperature would optimize Earth for human habitability?

The year is 2100. While climate change has wrought serious damage to the biosphere, humanity has at last managed to become carbon neutral, and has even developed technology that can be used to reduce ...
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0answers
50 views

Bleeding as the bodily equivalent of a positive pregnancy test, Plausible?

One of many things that differs the pregnancy of my Keplerians and that of humans is that in Keplerians, there is a symptom that is equivalent to a positive pregnancy test. To explain this, first, I ...
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3answers
133 views

What would a darkness effect capable of blocking all electromagnetic radiation probably do?

(As of 2020, February, the 19th, 12:23, I have decided to use a different method than the one originally proposed. The method itself answers the question) Imagine a spell an effect of utterdarkness. ...
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3answers
131 views

Navigating a sea of sulfur hexafluoride

Sulfur hexafluoride is pretty awesome. It is a gas six times denser than regular air, and thus you can actually make tinfoil "boats" float on it. It also makes your voice deep when you breathe it in. ...
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2answers
66 views

Developed, highly advanced metropolis short on exotic foods

I have this setting, about an advanced city state in the middle of a sparsely inhabited wasteland/grassland type area. This state has the 90's level tech on consumer level, and a wide range from 90's ...
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1answer
73 views

How fast would a gas giant, or very close moon, need to orbit to maintain distance?

I have noticed that there is a common theme in science fiction art to depict one or more very large planetary bodies in very close proximity to the surface of the other world being depicted. (you can ...
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4answers
209 views

How to hide a spaceship visiting Earth?

So, me and the boys have decided to take a trip down to Earth for reasons that matter not be it science, leisure or fleeing persecution. It is no concern how we blend in but our spacecraft poses an ...
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7answers
2k views

What would be the best way to capture a Giant?

After years of meticulous planning and crushing any and all opposition I've set my sights on conquering other races and nations. One group that I believe would be a valuable asset for my expanding ...
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1answer
106 views

How much DNA half-siblings do share? [closed]

Title is pretty self explanatory, but how much DNA would half-siblings share if they had the same mother ? I'm asking for a very specific reason. I'm writing a book in which some boxes can only be ...
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1answer
47 views

How might a sea wyvern adapt its flame breath?

Sea Wyverns (name not final) nest on small, rocky islands scattered throughout the sea and primarily catch fish going somewhat below the water. Basically, wyverns ingest a piezoelectric crystal which ...
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0answers
55 views

How would a Jupiter sized planet impact humanity? [closed]

So while worldbuilding I was pondering the effects of such a large planet on humans and their development alongside magic, technology, society, etc. So the planet is like Earth in water/land ratio, ...
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3answers
75 views

How would the weather and organisms and flora be affected on an Earth-like planet with floating continents?

I am currently writing a script for my graphic novel. My novel is in the fantasy genre and I use energy-based hard magic (that is energy-based magic that has its sort of "science" and rules). So I don'...
3
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1answer
69 views

How might someone live for thousands of years?

A long time ago during the last ice age an early hunter gather human encounter an unknown entity (likely a alien) who granted him the power of immortality with him living at least up into the middle ...
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1answer
58 views

Immunity from all infectious diseases?

The human body can create a quintillion variants of antibodies.   Resistance to infectious diseases is mainly carried out by the methods: White blood cells (white blood cells) and phagocytes. White ...
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1answer
105 views

I have a way of giving something negative mass. Did I just end the world,or usher in a golden age of space travel?

So, somehow, I have discovered a process that makes an objects mass negative. Not its weight, its mass (although, I guess that the weight would also become negative). The thing is, before I try it, I ...
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8answers
717 views

Why would humans be the dominant species?

Humans, in most fantasy stories including in my own, are the dominant species. Why is that? Firstly, I guess I should give every race in my story strengths and weaknesses. Humans (same as us) have ...
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4answers
72 views

Malicious Infection Transmitted Across Outer Space

If an extraterrestrial race were to send a signal to earth containing a virus (technological or psychological), how could that signal then infect our technology and then be received by humans?
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Effectiveness of a glowing hot tungsten sword against medieval era knights?

A blade made out of tungsten alloy that’s also electrically heated to 3000C. The shape and sharpness is similar to a katana. The user carries a battery pack that provides enough energy for the sword ...

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