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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.

9
votes
1answer
398 views

Cracking Knuckles in Zero Gravity [on hold]

Cracking knuckles has something to do with air bubbles, but would it work in the same way if there is no gravity? If not, how would it be different? Would there still be a popping sound and/or ...
10
votes
2answers
1k views

Infrastructure damage from sudden thickening of water

Deep in a laboratory far under the megacity of Exampleville, a scientist is experimenting on a new compound found in an alternate, magical universe. He accidentally knocks over a vial of Handwavium, ...
3
votes
4answers
184 views

Perpetual Volcanic Eruption

As the title says, is it possible to have a volcano that is perpetually erupting, and how would it be achieved? To be considered a "Perpetual Eruption", the volcano must emit moderate quantities of ...
1
vote
0answers
110 views

A research facility, spanning hundreds of kilometers, in a Pentagon-sized building: How can it construct its rooms? [closed]

After I reached the net worth of Steve Jobs in collateral damage, during my most recent battle, the rest of the world decided to suppress me for obvious reasons. My only request was a small land, the ...
-6
votes
1answer
117 views

Punching someone and sending them flying at the speed of sound

Hey I'm just wondering how much force/energy is required to punch Someone so hard that the person is sent flying at the speed of sound Also what can you compare the force/energy too like for example ...
3
votes
1answer
111 views

Could a human grow up larger by manipulating their endocrine system?

In my world there are a group of female warriors with an unusual ability: the resources of their bodies are fungible. For instance, they can make the muscles in one part of their bodies stronger at ...
6
votes
1answer
241 views

Eating one whale every three thousand days?

My current ongoing project, about which I've asked many questions, is about a world in which evolutionarily plausible legendary and folkloric creatures roam the Earth. One such creature is the sea ...
6
votes
4answers
155 views

Feasibility of A Decoy Earth

I am currently writing a story that involves the never-ending-theme of alien invasions. Assume Humans are roughly at a Type I civilization at this point. Humans have unfortunately wandered into a ...
11
votes
1answer
88 views

Degradable ammunition for electro magnetic guns

Would it be possible to make ammunition for railguns and gauss rifles that would degrade over time either through a natural process or by the means of star radiation, so the missed shots don't ...
2
votes
2answers
82 views

Regulating my replica soldiers with a controlled form of ASPD (I'm not sure if psychopathy belongs to it)?

When you have around 500 soldiers with state-of-the-art equipment and superhuman reflexes, you might also want to invest in a reliable way of controlling them without hampering their ability to think ...
4
votes
1answer
95 views

How damaging would a major solar flare induced EMP event really be?

With specific attention to national electricity power grids. Some pertinent details needed to answer the question might be. What parts of the power grid get damaged by such an event How do they get ...
1
vote
1answer
32 views

Could controlling the oceans result in a wide-spread freeze?

My idea is a device that gives its user great power over the ocean, its currents, and presumably temperatures. Could this be used to dramatically (and in relatively short time) effect the climate of a ...
2
votes
2answers
58 views

Bicycles/human-powered vehicles on low gravity planets/moons?

In this scenario, humanity has managed to colonise some of the solar system, including Mars, some of the moons of Saturn and Jupiter and some of the larger asteroids of the belt. In most places they ...
0
votes
4answers
133 views

Fuel for a commercial space shuttle

The Aurora company has unveiled the new Interplanetary Airliner (usually simplified to space shuttle) offering both affordable and comfortable space travel to the middle and upper classes of the ...
17
votes
5answers
2k views

Could flying insects re-enter the Earth's atmosphere from space without burning up?

Huge numbers of genetically modified flying insects (purpose not disclosed here but it relates to affecting the whole of humanity) are to be dropped into the Earth's atmosphere from space so that they ...
11
votes
15answers
2k views

Slow moving projectiles from a hand-held weapon - how do they reach the target?

Human Earth explorers land on planet X. They are there to survey it. They are unaware that there is life on X until ... The locals are very aggressive and fire on them from a distance. The thing is ...
7
votes
5answers
207 views

160 Year Solar Orbital Period & 1.9 Year Moon Orbital Period - Is it possible?

A defining factor of my world is the hardships inhabitants have to face when surviving long seasons. Due to the extreme length of a year, time is largely measured by moon cycles. I need to make sure ...
3
votes
1answer
66 views

Weather patterns in an ice age

Specifically, I'm referring to an ice age that covers most of the Northern and parts of the Southern Hemisphere. Long after it began, how would weather in regions along the Equator and Southern ...
43
votes
15answers
6k views

Quenching swords in dragon blood; why?

Imagine a typical fantasy world. Elves, goblins, dragons, magic. If you were to equate it to a D&D campaign, you would be close enough for proverbial government work. That said, thanks to time ...
8
votes
4answers
188 views

How could dragons produce the energy needed to sustain themselves from gold

I'm currently contemplating ways to make dragons have a sustainable energy source in a medieval world, while still acting like the traditional soaring, adventurer grabbing, gold hoarding dragons (not ...
2
votes
9answers
371 views

If I travel back in time and do nothing, just being an observer, would that change the past?

This is how time travel in my question works: You go back to a certain point in time, physically, regardless of means. Be it a spaceship or a time machine. So you've reached to the past. You know ...
2
votes
2answers
87 views

Agressive squad-level tactics with robotic squires, what would change?

Sometimes, your death on the battlefield will be the result of a string of minor inconveniences spiraling out-of-control. This is rather embarrassing, especially when happening to my main character, ...
9
votes
4answers
430 views

What Would the Third Kind of Angiosperm Look Like?

To put this title into context, there are actually two basic kinds of angiosperms on Earth, showing here: These differences in characteristics serve their own adaptations to survive and thrive. Now ...
4
votes
3answers
139 views

Realistic Demonic Possession

Let's say that one day scientists discover proof of demonic possession when scanning the minds of patients with unexplained mental illness. My goal is to write a realistic scenario using current-day ...
3
votes
4answers
135 views

What drive/engine would allow Medrunners to make it to Venus from Oberon in one to two weeks

Medrunner Lao Dorn and his team have been given a mission. A young woman has contracted some sort of parasite that is slowly eating away at her vital organs. The doctors on Oberon are unable to do ...
-5
votes
1answer
99 views

Can more exercise alter human genes? [closed]

I want to know if exercise can change genes or not, if yes then what is process behind it and is it permanent or temporarily.
7
votes
5answers
256 views

Describing what the world looks like in UV and IR [closed]

In my world I have introduced two super powers, and both can be accidentally acquired by an otherwise normal human: one is to see infrared and the other is to see ultraviolet. I am aiming to have that ...
6
votes
2answers
163 views

Black hole collides with Sun: How rapidly is energy released?

Basic idea: Primordial black hole (2.5% of Sun's mass) directly approaches Sun at fairly rapid pace (300 km/s). Consequently, six days after passing Earth's orbit, it will collide with the Sun; ...
16
votes
17answers
5k views

How can my powered armor quickly replace its ceramic plates?

Though ceramic plates are harder than a math exam, and can practically obliterate projectiles, they are one-hit wonders. Self-repairing has been demonstrated for a composite of silicon carbide and ...
10
votes
11answers
2k views

Alien invasion to probe us, why? [closed]

In popular culture on my Earth-like planet, alien-abduction stories, anal probing and conspiracy-theories are well-known but largely considered by mainstream culture to be delusions or fanciful ideas ...
6
votes
4answers
1k views

Would tunnel walls be stronger if built using cut granite block walls reinforced with carbon based cords?

I have been drafting the concept of a future world based on current research. I have been contemplating the long lasting transportation tunnels of the future. I am asking about the likelihood of the ...
3
votes
2answers
92 views

Carbon cycle on planet with mainly CO2 atmosphere

What effect would having CO2 in your atmosphere in place of, on earth, Nitrogen have on the carbon cycle? would the carbon cycle even work? I'm engineering A theoretical tidally locked planet with an ...
16
votes
19answers
3k views

How to make ice magic work from a scientific point of view?

I've recently been imagining a world of magic with heavy influence from chinese wuxia and xianxia. In such worlds, there's often various fire and ice magic, among other different types. Now, fire ...
9
votes
8answers
2k views

Why are all my replica super soldiers young adults or old teenagers?

So, I was working on my setting when I thought, "if I'm going for maximum JRPG feeling, I need several teenager protagonists, who somehow still stand a chance against the armies of Darkness." ...
11
votes
3answers
660 views

The effect of fishing on total land area needed to feed an island settlement

I am trying to create an island with a large settlement on it, the people of this settlement need to be able to sustain themselves and according to Medieval demographics made easy (MDME) A square ...
-6
votes
6answers
145 views

Importing Space for Sale in Cans - How to remove the smell? [closed]

My company wants to sell novelty cans (or other containers) of genuine space from various places in the Galaxy but unfortunately space smells - see the following expert's statement. "Louis ...
0
votes
2answers
149 views

Destroying earth from light years(?) away [closed]

Consider a highly advanced civilization that is almost ON THE VERGE of developing futuristic (for us) technology like FTL travel. (I insist on the "on the verge" aspect, because I envision this ...
4
votes
3answers
139 views

Vacuum Cleaners as Weapons against the Spider Folk - improving their range

Background The spider folk, excluding their legs, are about the size of a golf ball but they are very numerous, they are highly venomous and, they're invading. Various tactics have been tried but the ...
10
votes
8answers
4k views

What's the oldest plausible frozen specimen for a Jurassic Park style story-line?

We've found all sorts of interesting stuff in arctic ice & permafrost around the world. Bacteria & the like far older than the more media friendly mammoth specimens have been found, living ...
3
votes
5answers
143 views

What would be the ideal crew number for this space ambulance?

Medical stations and qualified doctors are few and far between within the outer colonies while most patients can be serviced at the usual medical facility (every station is required to have one), but ...
18
votes
5answers
4k views

How much light is too much?

A mage has created an amulet of light. It shines light from one side, and the user is capable of controlling the color and intensity of that light. In an effort to avoid abuse, the mage has limited ...
12
votes
6answers
2k views

What would be some possible ways of escaping higher gravity planets?

I know that chemical rockets would allow for some minor loads to escape the gravity of a planet with higher gravity. My question is, what kind of technology would possibly allow a dominant species ...
7
votes
2answers
218 views

Giving dragons more flight muscle

Okay, we know the type-IIb FG muscle fibers are the strongest stuff we can use. So, the only thing we can do is attach more, but how? Dragons are 180 cm tall at the shoulders with a total neck+head ...
1
vote
1answer
63 views

Genetically engineered Moray Eel?

Is it conceivable to genetically engineer a moray eel large enough to hunt and eat humans in its cave like habitat? It needs to have: armored skin that can withstand gunfire good all around swimming ...
4
votes
4answers
360 views

Designing the most boring planet ever discovered. Part 1: planetary surface

@Gryphon has made me aware of this The Least Interesting Substance It is very close but I need a planet that can form naturally. Would any of the substances mentioned in answers to that question be ...
2
votes
1answer
195 views

Only changing the mass of the moon, how much can lunar mass increase before the Earth becomes uninhabitable?

Bonus: How much would the increase in lunar mass increase average tides? & which factors would cause the Earth to become uninhabitable?
1
vote
2answers
166 views

Properties of a planet roughly four times as big as Earth

I have some research I want to do about a planet for a novel I'm writing. It is a fiction/science fiction novel, but I do wish to actually have some parts of the world correct in the scenes I depict. ...
2
votes
2answers
92 views

High-Altitude Asteroid Impact

66 million years ago, the dinosaur empire was in its death throes when its final nail in the coffin came hurtling down from the sky. A clump of rock the size of Mount Everest smashed into the Gulf of ...
3
votes
4answers
557 views

Could black hole civilizations even exist?

I know that currently, black hole civilizations are only theoretical. But here are my thoughts on why black hole civilizations are impossible. Black Hole Civilization Issues 1. Gravity This is an ...
7
votes
5answers
2k views

Could Comets or Meteors be used to Combat Global Warming?

The running theory is that if the Earth is hit by a sufficiently large meteor, that the impact would create an ice age from all the dust it would put into the atmosphere. While this has been ...