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.

Filter by
Sorted by
Tagged with
3 votes
2 answers
255 views

What is a reasonable day length for a planet with 4 times earth radius?

The fictional planet has a mass of 18 times Earth's and four times earth's equatorial radiusreference. This gives it a gravitational acceleration of 11.02m/s^2 (1.29G) and an escape velocity of 23....
user avatar
  • 12.8k
-2 votes
0 answers
27 views

Is there a heat repellent paint that isn't blinding? [closed]

Is there a type of material that can be painted onto concrete and sidewalks that isn’t a blinding white color?
user avatar
3 votes
4 answers
693 views

I designed a Maglev space propulsion tube on Mt. Everest. Do you see any issues with it?

So, I designed a mass driver on Mt. Everest. The mass driver is powered by "PERMANENT" magnet rings with a strength of 5 teslas each (the black lines in the tube). The mass driver then ...
user avatar
7 votes
1 answer
222 views

Is it scientifically possible for a 15 to 20 foot long Dragon to have 6 limbs and still be able to fly?

In my works, there’s an Earth-like planet known as Lyrial which is linked to Earth and is home to a species of Dragons that’s meant to be scientifically plausible. Additionally, another planet, ...
user avatar
3 votes
1 answer
93 views

How small could we make a seed for a non-nanotech von Neumann machine?

Nanotech von Neumann machines can obviously be made quite small--bacteria are existence proofs! But what if we don't want to rely on biology, or any any sort of magic nanotech? At the other end of the ...
user avatar
0 votes
1 answer
153 views

Can anatomically modern human siblings have three decades of age gap? [closed]

In my story titled La Maison Sapiens, there is a HUGE nuclear family composed of the father, the mother, and their seventeen biological children. To be exact, the dyadic cisgender man and the dyadic ...
user avatar
3 votes
1 answer
53 views

Do sulfuric acid plants produce oxygen?

In Biochemistry of a sulfuric acid world, I assumed that autotrophs would strip hydrogen from H2SO4 (which is their biosolvent) to fix carbon, just like plants on Earth strip hydrogen from water (...
user avatar
2 votes
1 answer
76 views

Does my concept for an "ergosphere highway" make scientific sense?

In my current science-based project, I have this idea for a string of rotating black holes (bonus points if you can figure out how they can be lined up without gravitating towards each other) that are ...
user avatar
  • 69
2 votes
2 answers
67 views

Biological mineral storage in an acidic world?

In a world with acidic oceans, shells and bones made of calcium carbonate or calcium phosphate won't work--they just dissolve. As far as shells or structural bones go, that's not a big deal--there are ...
user avatar
26 votes
10 answers
3k views

Would a purely agricultural world exporting its production be sustainable when it comes to water?

To simplify the question as much as possible, let's assume an Earth-like planet, part of a galaxy-spanning civilization. 30% is above water level, the rest is ocean of salt-water. This world is an ...
user avatar
  • 4,563
-1 votes
1 answer
92 views

Can a planet fifteen times heavier than Jupiter not turn into a brown dwarf if it rotates fast enough and at the same time has a solid surface?

The book Mission of Gravity by Hal Clement describes a planet whose mass is 16 times the mass of Jupiter, rotating at a speed of one revolution every 17.75 minutes. This leads to the fact that it ...
user avatar
13 votes
10 answers
3k views

How would a blind intelligent species navigate space?

I am writing about my own fictional cluster of solar systems where one planet had many environmental circumstances that lead to the majority of the planets species evolving to be blind and rely on ...
user avatar
  • 285
0 votes
2 answers
102 views

What technology level could an avian species achieve? [closed]

Let's take the traditional image of a harpy from Greek mythology: A sapient creature with avian wings and talons with a humanoid head (and presumably, cranium capacity). This creature does not possess ...
user avatar
  • 161
4 votes
0 answers
68 views

Could a human metamorphosis work?

I was playing RE:6 and I was wondering if it could be possible with the help of a virus to make metamorphosis on humans, the girl in the videogame basically turns into a chrysalid and by the end of it ...
user avatar
5 votes
2 answers
114 views

How would Earth's land be different climatically if it was 50% land and 50% water?

I'm coming up with an alternate world that is far more balanced when it comes to the surface area. Real life Earth is 71% ocean and 29% land. Astronomers speculate that Earth got its big oceans by ...
user avatar
-2 votes
0 answers
22 views

Could a comet continue on its current orbit after having been hit sufficiently hard by a natural or manmade object that a large meteoroid breaks off? [duplicate]

Is it possible for an advanced civilization to strike a comet approximately two weeks before impact with the earth, breaking off a large meteoroid that plunges straight toward earth, while the comet ...
user avatar
  • 1
-2 votes
0 answers
16 views

Question on potential behavior of a comet [duplicate]

Is it possible to attack a comet approximately two weeks before impact with the earth, breaking off a large meteoroid that plunges straight toward the earth, while the comet continues its orbital arc ...
user avatar
  • 1
-2 votes
0 answers
34 views

Is it possible to attack a comet in space, breaking off a large meteoroid, but have the comet remain on an orbital arc toward the earth? [duplicate]

Comet is on a decaying elliptical orbit which will impact the earth. Scenario envisioned
user avatar
  • 1
2 votes
0 answers
68 views

Question on how my civilization can deflect a comet on a decaying elliptical bringing it into a collision course with the earth [closed]

My novel requires that a comet, in an eighty-year elliptical orbit around the earth, changes trajectory due to a friction-like mechanism, resulting in orbital decay that will impact the earth within ...
user avatar
  • 1
10 votes
9 answers
2k views

How to slow and limit the scope of the internal combustion engine in powering an airship

I need to limit the development of the internal combustion engine so that it is only available in small numbers to few individuals and does not progress technically, or at least only progresses slowly....
user avatar
  • 32.3k
5 votes
3 answers
94 views

What's a persistent weather condition that could justify being unable to use the Sun to obtain a bearing?

I'm attempting to plot an unplottable piece of land. The basic idea of the concept is that travelers who end up within the land will get lost because there's simply no way to get one's bearing, except ...
user avatar
  • 40.2k
33 votes
8 answers
3k views

Proving a world is in our galaxy

A portal about 30ft in diameter appears on the surface of our present-day Earth. It appears for about 5 minutes each day before disappearing. Hesitantly, scientists go through it and discover a new ...
user avatar
  • 443
22 votes
4 answers
3k views

Is it possible to use a system of ring-shaped muscles to pump blood instead of a heart?

Most species which use blood (that I know of) use a heart or set of hearts to pump their blood around their body. However, in something like our digestive system, a series of muscles are used to force ...
user avatar
  • 533
-2 votes
0 answers
75 views

What would the abilities of a 4th dimensional being be like? [closed]

Based on my limited (and probably inaccurate) understanding of the 4th dimension, its that all three dimensions can be both seen and accessed all at once. Does this mean if a being exists in four ...
user avatar
  • 1,176
-2 votes
0 answers
56 views

Could shorter torsos and longer necks and hips work on ALL primates? [closed]

In this image by jerica128, they created a hypothetical kind of winged humanoid called a "legnarian", and it was portrayed as having the following features to justify flight capability: ...
user avatar
  • 14.1k
18 votes
3 answers
2k views

Would Underwater Races be Near or Farsighted?

Light travels differently in water and air. Some of that is because of light's speed in a substance, and some is the light absorption that substance exhibits. Is the difference in light scattering ...
user avatar
  • 533
4 votes
3 answers
444 views

Would this concept for a hypothetical cloud-city on Saturn work?

My cloud-city is centred on a low altitude region just below Saturn's cloud tops, and it is lifted by a hot hydrogen balloon, which is heated by graphene cables that are many miles long and dip into ...
user avatar
4 votes
4 answers
205 views

How long to bring a machine into a cooler climate without damage?

My world has a prospecting vehicle—a large robot, actually, that operates in 850°F volcanic regions. To bring it into a hangar for maintenance, I have decided that the material will be damaged by ...
user avatar
  • 6,849
2 votes
1 answer
189 views

Is it possible for a planet to not spin around its axis?

I'm currently reading a novel where the story happens on a planet orbiting Proxima Centaury. As the planet is very close to the star, which is a red dwarf, it is tidally locked to the star like our ...
user avatar
16 votes
12 answers
5k views

How to reignite a sun?

I just had an idea in a sci-fi setting for an alien race that has re-emerged, but I don't know how plausible it is or if there is anything to make it more plausible. Consider a conventional universe, ...
user avatar
5 votes
2 answers
348 views

Harvesting lightnings for energy...in real life Mordor!

I planned to have a region on my world that is similar to Mordor, as in a place with near constant thunderstorms and lightning strikes, about 30 times per minute at peak for at least 25 hours at night ...
user avatar
0 votes
2 answers
162 views

A synthetical virus created by a racist [closed]

In my science-fiction story, there is a vile scientist that creates a synthetical virus, because he wants to kill all humans of British and Irish ancestry all over the world. This virus ONLY affects ...
user avatar
3 votes
2 answers
106 views

Methods to transport CO2 through HCl-rich blood to the lungs?

Situation: The extraterrestrial vertebrate lifeforms have milky white blood rich in aqueous HCl, using an enzyme centered on aluminum oxychloride nanoparticles to transport oxygen, releasing chlorine ...
user avatar
  • 153
3 votes
2 answers
66 views

Is predictable time, type and amount of precipitation on a global scale a risk for ecological damage?

On Earth, we have problems with rain and other forms of precipitation: either it's absent for too long and it causes droughts and ecological disasters, or it's way too plentiful and it causes massive ...
user avatar
  • 8,369
26 votes
17 answers
6k views

What single change in history would make rear steering cars a standard?

In my alternate Earth, which follows our timeline almost consistently, I want one of the differences being that the de facto standard for cars is that they have rear steering wheels instead of the ...
user avatar
  • 245k
3 votes
2 answers
311 views

How would you design an American Civil War Era Napalm/incendiary munitions?

I am working on a Steampunk/Alt history novel of the American Civil war. I would like a plausible way/recipe to include napalm/incendiary munitions fired from the steam tank/mobile artillery that you ...
user avatar
0 votes
1 answer
74 views

Atmosphere of a Carbon Planet. Are there flaws in my system?

My spec-bio project involves the idea of life evolving on a (Carbon?) Planet, rich with metals (Platinum, Chromium, Etc...) and pre-existing hydrocarbons. Basically life would have to evolve on an ...
user avatar
1 vote
3 answers
251 views

How possible is it for someone to be born without a sex(physically)?

When I say "sexless", I mean that they are born without male or female phenotypic sex. Not identifying or being nonbinary, but Anatomically sexless. Note: This is not to offend anyone who ...
user avatar
  • 1,749
2 votes
2 answers
74 views

Desert planet with high humidity percentage [closed]

I create a desert world, but I would like to give it slightly different properties, above all, to turn it from a dry environment into a humid one. Unfortunately, for some time I have been looking for ...
user avatar
1 vote
2 answers
209 views

What carbon-based alternative biochemistries would work in high-temperature, high-pressure water?

For a while now, I've been wanting to design a world where the average temperature is very high (compared to Earth, but nowhere near as high as Venus) but the water does not boil because the ...
user avatar
4 votes
1 answer
102 views

How plausible is my solar system?

I am currently working on a world orbiting around a red dwarf star (M0V to M2V, I haven't decided yet) and I need some help with designing the solar system. My original plan was having 4 planets ...
user avatar
0 votes
4 answers
101 views

How does the pending climate catastrophe play out with a sudden population reduction? [closed]

In the real world, we are facing a dire situation with global warming becoming worse by the year and nothing being done about it. The projected models predict several degrees Celsius warming by mid-...
user avatar
6 votes
2 answers
104 views

How would I make my Quintuple Star System Stable?

So I've been working on a star system that I want to have inhabitable planets, so by stable I mean stable on the timescale of the stars themselves; billions of years at least. So my initial plan was a ...
user avatar
8 votes
8 answers
3k views

Make a tiny island robust to ecologic collapse

My world is to have a tiny island that will periodically be inhabited by a person or small group of people. By tiny I'm using a fuzzy yardstick: 1-50 hectares. When people are here, they will be ...
user avatar
3 votes
6 answers
213 views

Obliterating the Earth, *without* throwing rocks? [closed]

In this case, I don't mean "make the Earth uninhabitable", I mean "make the Earth a debris field". This has been asked before, of course, but the answers always seem be be some ...
user avatar
0 votes
1 answer
88 views

Can my cyborg idea work? [closed]

I'm writing a book where the main character is a cyborg, it's going to be a hard-science book and my idea is like a brain in a jar with the intact brain within a structure that pumps artificial blood ...
user avatar
0 votes
2 answers
275 views

How to do dental surgery on a T-Rex tooth?

In my world, Dinohumania, dinosaurs and humans coexist. There are ways humans benefit from and utilize dinosaurs, mainly for industrial/laboral activities and heavy tasks. Humans try to maintain a ...
user avatar
  • 1,650
11 votes
6 answers
3k views

What are the possible attributes of aluminum-based blood?

Situation: The vertebrate life of a distant planet uses biogenic silica for structural support. However, biogenic silica is soluble in water, but (according to this article) its solubility decreases ...
user avatar
  • 153
5 votes
3 answers
922 views

What would realistically happen after a gravity magic spell is cast?

I have read dozens of books where gravity magic is a thing. It ocurred to me, while reading one of these stories, that every version of a gravity magic spell that I have heard of, is missing something,...
user avatar
0 votes
1 answer
61 views

Could we create an artificial metamorphosis on humans with genetic engineering? [duplicate]

I'm writting a hard-science book where adult humans with the help of genetic engineering can undergo metamorphosis, could it be possible?
user avatar

1
2 3 4 5
166