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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.

7
votes
5answers
261 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
165 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
97 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
662 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
147 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
151 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
144 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
361 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
198 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
168 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
93 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
561 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 ...
-1
votes
2answers
161 views

Alternate aircraft configurations - would any of them be valid substitutes for conventional tailplanes?

So I'm incubating a few alternate histories in my head. Many of them will butterfly away the Wright Brothers and many other familiar parts of history, and at least one has aircraft development as a ...
7
votes
4answers
227 views

Could a route among the asteroids be built to reach Jupiter's moons once the technology to reach and set up a base in Mars is ready?

Once the technology is ready to reach and set up a base in Mars (perhaps 10 years if SpaceX expectations come true) could it be possible to build a route among the asteroids to reach Jupiter's moons? ...
-1
votes
3answers
91 views

Non-lethal nanite weapon, how could they quickly incapacitate any animal?

So, I was working on limitations for my cheesy overpowered cyborg, Anon, and then pacifism came to my mind. Being forced into using non-lethal measures drastically decreases and caps any character, ...
0
votes
0answers
56 views

How long would it take a town to become overgrown? [duplicate]

So in my imaginary world, in the mid-to-late 2000s a lot of people die off. The reasons for this are unimportant, so I won't include them, but it has no impact on plant and animal life. So, ...
2
votes
2answers
139 views

How do I figure out temperatures and amount of sunlight for a world?

How do I figure out the temperatures of certain latitudes on a planet with factors such as sunlight and the emission of heat and energy from a planet's interior? Assume the planet is smaller than ...
4
votes
1answer
76 views

I'm trying to create a planet with a purple sky, human life on planet not necessary [duplicate]

I think that it could be possible with a red sun, and either massive oceans containing algae or a surface covered with active volcanoes. What would my atmosphere be made of, and what color would those ...
6
votes
1answer
123 views

What tree type grows into the most dense forests?

"Tree" is (apparently) not a very well defined term as far as scientific classifications are concerned, so I'll put my own restrictions on it for this question: Typical healthy adult specimens must ...
9
votes
7answers
1k views

Removing an item from a weight-sensitive pressure plate without triggering alarm [closed]

A character in one of my stories wants to steal a valuable artifact from a museum. The artifact is on top of a sensitive pressure plate, which is configured to trigger an alarm if the weight changes ...
8
votes
2answers
561 views

Could Gymnosperms Develop Fruits and Flowers Like Angiosperms?

Here is the scenario: A Paleo/Mesozoic mass extinction wiped out 96% of all terrestrial species, and the only plants that survived were as follows: One genus of conifer One genus of cycad One genus ...
5
votes
3answers
533 views

Alternative to horses in a dry climate

I'm looking for an alternative for horses. Why not horses? the short answer is the gods didn't want to create them. The gods in my universe like to annoy humanity. Horses only seem to really benefit ...
2
votes
2answers
128 views

Can artificial general intelligence live forever? [closed]

Suppose some advanced civilization has created some AGI. AGI, i.e., strong ai, could successfully perform any intellectual task that a human being can and also carry massive knowledge databases. ...
6
votes
1answer
72 views

Effects of Red Dwarf CME (Flare) on Biological Life and Atmosphere

I have a planet circling an M-Class star (M3/M4). I'm trying to figure out what the effects of flaring on the planet's biosphere might be. Background: As some of you may know, M-class stars are ...
3
votes
3answers
194 views

What weapons would nanomachines use? [closed]

So, the strongest of my current characters is a happy little cloud, that's composed of nanomachines (well, not exactly nano, it's well in the micro prefix, but individual parts obviously require ...
9
votes
3answers
184 views

How could a hive-mind without true individuals create technology?

Imagine a species in which the ego never developed. There is no self-direction. This species is always making noise, however, and it is through this noise that the society itself experiences the ...
9
votes
4answers
188 views

Is it possible to make Asteroid Concrete?

In the far future, man is trying to build a small colony in the asteroid belt - on one of the bigger asteroids. All the materials are to be mined from asteroids, and it is assumed the colony will have ...
7
votes
2answers
215 views

The Worldkillers - Method I: Oceans

This series will focus on a Worldkillers: a group of interstellar outlaws who specialize in destroying worlds. Each question has the objective to explore a different way to kill a planet - a word ...
8
votes
1answer
296 views

Mathematics of monsters

Researching for a science fiction novel. My character loves math + I have dyscalculia = Problem. Therefore, I need your help. In my story, there are aliens we can see, but we can't hear or touch. ...
11
votes
2answers
2k views

What color should the snow be in this chlorine world?

This question is in the same context (the same world) proposed by Steven L. Gillett in his book: "World-building". And actually there have been some other questions about this same chlorinated world. ...
4
votes
2answers
260 views

Life in the Northern Hemisphere if Beringia Never Drowned

When one hears the name "Beringia", we most often think the land bridge that formed as a result of a drop in sea levels during the Pleistocene, resulting in a connection between Alaska and Russia. But ...
12
votes
3answers
292 views

Symbiotic Assassin Vines

I have an idea for an encounter in my world that goes like this... A weary group of adventurers are trekking through a great ancient forest. This forest is avoided by most due to strange tales of ...
6
votes
2answers
305 views

Does crossing a wormhole happen instantaneously, or with the course of time?

I have seen many science fiction movies that depict traveling in space through wormholes. The appearance though, and the time it takes to cross a wormhole, tends to vary: • On one hand, we have the ...
1
vote
1answer
275 views

Can a black hole be turned into a white hole?

Following the Schwarzschild metric, we could consider that a white hole=black hole with no angular momentum (no spin?) or electric charge. Would be enough to slow down a black hole and somehow remove ...
-1
votes
2answers
108 views

What would a Scientific based way of making a person Similar to Marvels “Spider-Man” [closed]

The Question How would someone scientifically emulate Spider-Man powers without altering the human genes? The Limits No genetic engineering (except on spiders for their silk) Technology level is ...
5
votes
2answers
116 views

Reducing atmospheric pressure on Snowball Earth

A Snowball Earth is a global condition (which may have occurred many times) in which the temperature everywhere on the surface was, for extended periods (up to tens of millions of years), below the ...
4
votes
5answers
263 views

Terraforming via rapidly growing organisms, is it a good idea?

Terraforming and maintaining a biosphere suitable for humans is tough, but no worries, Protogon is here! Collaborating with Providence, our scientists have created Hygiea, a series of rapidly growing ...
5
votes
1answer
178 views

Realistic alternatives to oxygen-based respiration? [closed]

Background I'm developing 6 to 10 sapient alien races for a short story. Basic Story Setting The short story takes place in the Milky Way sometime in the next 1000 years. These races will be at ...