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108 questions with no upvoted or accepted answers
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114 views

What should an inactive planet's topology be for nutrient circulation?

I'm trying to engineer an Earth mass planet built initially out of pure silicon dioxide (silica). So basically, imagine a glass sphere slightly larger than Earth somewhere in the Goldilocks zone, ...
4
votes
3answers
247 views

Would the seasons on this solar system be too extreme for Earth life to thrive?

In this artificial galaxy, there is a trinary of quasar stars at the center, each one 1.5 trillion times as massive and 995 trillion times as bright as our sun, each one having its own ring of mirrors,...
4
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0answers
99 views

Largest possible biomass on any given exoplanet

Suppose you are the hypothetical architect of a new exoplanet, who's been handed the job to maximize this exoplanet's biomass. Given the current knowledge of life as it is, and thus leaving any sort ...
4
votes
1answer
63 views

Convection Cells in the Atmosphere of a Jupiter-Sized Planet

Background The setting for a story I am creating is an earth-like planet near jovian surface area, existing in a universe where the force of gravity is appreciably weaker than in our own, such that a ...
4
votes
3answers
85 views

Disabilities and dealing with them of other natural forms of communication

To humans the normal means of communication is verbal speech, with sign language, written words, braille, etc being used to help those who can't communicate normally. There are those who're only ...
4
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0answers
139 views

If the Earth is completely covered by mirrors, how quickly does it freeze?

Suppose all areas of the Earth is suddenly covered in indestructible mirrors (assume they reflect 70% of solar energy that would hit the land/ocean), how quickly will the increase in albedo cause the ...
4
votes
1answer
189 views

Would a spider-like digestive tract work in a larger creature?

Would it be plausible for a large animal to transport nutrients through its body through digestive tubules in addition to (or even instead of) the blood? The specific system would be a system of ...
4
votes
1answer
276 views

Assigning realistic climate zones

I'm thinking about the Koeppen climate zones for my Earth-like planet. It is all very roughly painted, because I would like to get it right first before fine-tuning the world. I've so far started with ...
4
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0answers
117 views

Could a universe with 3 or more $U(1)$ charges that are all equivalent to each other be self consistent?

In alternate universe there are at least 3 $U(1)$ charges. An elementary fermion can have a value of $±1$, or $0$ for any of these types of charge. The value an elementary fermion has for one of ...
3
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0answers
55 views

Climate after the Ragnarok IMPACT

I am curious (with reasons) about what will happen after an asteroid (called Valhalla 2! Valhalla 1 had collided with the Moon!) collides with Earth. Initially, Valhalla 2 is a major fragment that ...
3
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0answers
67 views

What is the advantages and disadvantages of a creature capable of splitting sections of their wings apart?

I was trying to make a creature for a fictional dimension that is extremely hot and has many cliffs and difficult to maneuver areas, leading me to the conclusion that flying creatures would be ...
3
votes
1answer
128 views

What would be different in the brain of a being that lives hundreds of years allowing it to have enough memory space?

So I’m trying to create a race of alien that lives for 600 years but I need them to have the memory space for all that time. The human brain can hold approximately 300 years worth of memory and that ...
3
votes
1answer
30 views

Molecular ecology for endogenous formamide formation?

Kind of a follow-up to this earlier question: How could formamide lakes form on an exoplanet? Suppose the problem of how to get an initial quantity of formamide is solved, and microbial life has ...
3
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0answers
79 views

Orbit resonance: Is it possible to have exactly 3 months in a year?

It is possible for a planet to have orbital resonance with a sun (e.g. Mercury has a 3:2 spin resonance with the sun). It is also possible for a moon to have orbital resonance with a planet (e.g. our ...
3
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0answers
74 views

Visual gravitational effect of cosmic string network on background light

A scientific paper last year proposed the idea of cosmic string life-forms which could flourish within stars. The basic idea is that cosmic strings,theoretical topological defects from the early ...
3
votes
1answer
105 views

How plausible is this planetary system with binary stars?

In my world, I have a binary S-type Solar System of Star-A and Star-B with these properties: Star-A: Luminosity: 0.86822 Sol / Mass: 0.98097 Sol / Radius: 0.91958 Sol / Radius of Hill Sphere: ~37.218 ...
3
votes
1answer
132 views

How Habitable are these Planets?

For the book I'm writing for my world, Damarian, the villains of the series (The NUSA, America's descendant) are banished off Damarian (Spoilers). The banished are shipped off, but 3 groups formed, ...
3
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0answers
117 views

Help with my ocean currents

First off, I'm really not good with designing ocean currents (I find the topic confusing and hard). But for my world which is basically just earth over 100 million years in the future, I need to ...
3
votes
2answers
228 views

How wide should be the most possible visual spectrum for an organic eye?

A typical human eye reacts to waves with a length of 380 to 750 nanometers, which in frequency corresponds to the strip in the area of ​​400-790 THz. At the same time, a portion of 380-400 nm is ...
3
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0answers
86 views

Alpha Centauri/Binary Star Planet Orbits

One of the physical constraints to planetary systems around Alpha Centauri A and B that many papers have pointed out is that the planets would need to orbit in the plane of the A-B Orbit, not the ...
3
votes
2answers
186 views

Habitable low mass super earth and its habitable high mass moon feasability

So, I've got a fantasy world where there is a super-earth with Earth-like gravity (aim is approximately half-again the diameter of Earth) that is the homeworld of non-native humans(introduced to the ...
3
votes
2answers
311 views

How feasible would non-jawed vertebrates be on land?

In my alien world life has evolved very convergently with life on Earth. Carbon-based lifeforms managed to evolve multicellularity and evolved a lineage of organisms in line with early fish, however ...
3
votes
1answer
74 views

How many tectonic plates should my moon have?

I have been wondering, what factors influence the number of tectonic plates a planet would have? Are there criteria to choose the number? Case in point, for my habitable moon project, here is the ...
2
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0answers
57 views

What would a eusocial species of lepidopterans look like?

I am writing a science-fiction story that takes place some million years in a future Earth. There is a species of lepidopterans that evolved to become eusocial. They are my gnomes. My species is a ...
2
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0answers
83 views
+200

Weather for a dense-atmosphere water world

In this answer, I describe a low-density water world with a surface gravity of 1g and a surface atmospheric pressure of 20 ATM. The air temperature at the 1 ATM altitude (naively, assuming a ...
2
votes
2answers
71 views

Biblaridion's equation for making a star based off its luminosity

I have searched for at least 45 minutes and I can't seem to find it. If you don't know what I'm talking about, in Biblaridion's first Alien Biospheres Video, he mentioned the you could calculate a ...
2
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0answers
45 views

Could the differences between day and night on this desert planet allow for strictly nocturnal condensation?

Here's the basic gist of this (debatably) habitable Earth-like desert planet: Size: Same as Earth Rotation: 30 hours (three extra hours of daylight followed by three extra hours of night) Revolution:...
2
votes
1answer
104 views

Mechanical-electric firearm ignition

For some time I've been thinking upon the concept of a firearm that uses a mechanical system to generate an electrical current for use in a electrically ignited firearm without the hassle of batteries....
2
votes
1answer
142 views

What would be the equivalence of these feats of a 6 inch tall and 4 ounce android when translated to a 6 foot tall 160 pound android?

Ok, so I have this OC(original character) called Tomoniki(which means 'action figure' in my language/conlang) that is an android that is 6 inchs tall, and weighs 4 ounces. She, to my knowledge is ...
2
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3answers
86 views

How would you use volcanic magma to create massive islands the size of Indonesia etc?

I've read an answer explaining how it could be done but I was wondering what anyone thought about creating island chains the size of continents etc. using magma under the ocean. What would be the ...
2
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0answers
77 views

How a creature with "bio-radiocomunication" would work?

Animals exist that use bioelectrogenesis allowing for electrolocation. Is this so different from "bio-radiocomunication" that it would disallow animals to develop this ability? An animal ...
2
votes
1answer
93 views

how to make a bipedal non colony ant species somewhat believable in a world 20 million years in the future?

I'm trying to plan out a story that flips the roles of a 50's giant monster movie that has a human be awakened by cryostasis 20 million years in the future by an bipedal ant species. The human is as ...
2
votes
2answers
104 views

Is it plausible to have a double-planet between a gas dwarf and an Earth-like planet? if so, can the Gas dwarf protect the planet from solar winds?

In my story, I plan to make a double-planet between a gas dwarf and an Earth-like planet, so is it plausible in a red dwarf or Ultra-cool red dwarf system? and if so, could the gas dwarf protect the ...
2
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0answers
54 views

How different, geographically, would Western North America look if the ice ages lasted 14 million years rather than two-and-a-half?

If such iconic landscapes as the Great Lakes, the Mississippi Basin and New York Harbor are proof of anything, it's that the North America we know has been shaped by ice ages coming and going and ...
2
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0answers
111 views

Fusion Orion Drive

Orion drives are awesome. Nobody can deny that. They are however a little outdated and still use pure fission pulse units. Obviously they are in need of an upgrade! A good place to start would be ...
2
votes
2answers
147 views

Light reflecting off a gas giant onto its moon

Okay, thanks to Ash, I know how to calculate the percent power of light hitting a planet at various angles. It is equal to cos(θ)2, where θ is the incident angle. I have a gas giant with a radius of ...
2
votes
1answer
164 views

Two large moons in horseshoe orbit possible? What effect on humanlike life?

I've decided that the planet I'm writing will have two moons in a horseshoe orbit, closely modeled off of Saturn's Janus and Epimetheus. For the purposes of this question, I'll be calling them Moon ...
2
votes
0answers
86 views

Wind strength in a massive planet

I'm working on this planet that has 1.5x earth's mass, so the gravity is a little stronger, given that the density it's the same. The gravity is 1.15x earth's. As i don't know how to calculate the ...
2
votes
1answer
121 views

What Tools to use to generate a fantasy world map with some preset parameters?

I have a world I would like to use for a fiction I am using, and the free tools I got from google (first page) mostly don't do it well. The world is a Disc. The landmass is about 475 million square ...
2
votes
1answer
83 views

Effect of lower average temperatures on the tropical savannahs and deserts of a planet

I have a nagging question that has been eating away at me since I am figuring out the biomes that are present in the world that I am building. For all intents and purposes this world is basically an ...
1
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0answers
10 views

What are good structural and energy-storage molecules that don't release gas when synthesized?

Nicar is a carbon world (formed from a protoplanetary disk with more carbon than oxygen, so water is geologically unstable and the chemical environment is strongly reducing) with ammonia oceans and ...
1
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0answers
60 views

Strength of Little Mermaids

This is a successor of Little Mermaids: Will They Survive? and concerns the strength a little mermaid has to throw around. You see, a little mermaid has enhanced strength; the strength of a typical ...
1
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0answers
54 views

Thunderstruck and tesla beetles: Are they feasible?

Basically, I've been theorizing an alien planet for a conceptualized game project called "The Von Neumann Project," where you play as an android attempting to colonize a hostile alien world ...
1
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0answers
43 views

Fire-monster Pouch Development

Kapowch is a kangaroo-like creature infused with Fire magic, which naturally leads to certain problems with its pouch, no matter how you slice it. First of all, even if it’s open like a real kangaroo’...
1
vote
1answer
75 views

How far away must a tidally-locked planet be from its star for the side facing the star to be lush?

I've been wondering if it's at all possible for a habitable tidally locked planet to not be a scorched wasteland on one side, an oasis in the twilight, and a frozen wasteland on the other, the planet ...
1
vote
1answer
56 views

Converting an Equitorial-Centered Azimuthal Projection into Equirectangular

The Problem I made a map of a tidally-locked world under the premise that I was drawing it as an Azimuthal Projection, or a Planar Projection or something like that (I'm afraid I don't know the ...
1
vote
1answer
73 views

How much electricity a cloud can generate?

Introduction If lightning in the storm clouds is generated by the friction of ice crystals and water droplets, it would make sense that any type of cloud can generate static electricity, albeint in ...
1
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0answers
53 views

How fast can an alien laser cannon be charged with a magnetic field?

I have some alien laser cannons that I pulled out of a perpetual hurricane. They're cylinders that are two feet long and one foot across. They can only be charged by magnetodynamic coupling - that is, ...
1
vote
1answer
86 views

Can a planet bigger than earth exist with same density but with more water proportionally and a lighter core?

By bigger, only the area of the crust is necessarily bigger. Core is necessarily lighter. Everything else could vary. Can it hypothetically exist?
1
vote
0answers
63 views

How would an amorphous, chewing gum-like retainer work?

In my setting, a cheap and effective (since it doesn't have to be custom-fit to a person's teeth), albeit rather unpalatable dental health solution is the amorphous retainer: a blob of non-toxic putty ...

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