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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11
votes
2answers
309 views

Weather with extreme seasons

Assuming the axial tilt of the Earth was increased to roughly 30°, and the orbital eccentricity roughly doubled(0.03 as opposed to 0.016) so that the average temperature stayed the same, but the ...
6
votes
2answers
166 views

How would huge chunks of floating land soaring the skies really fast affect my world?

My world is composed of a surface and three distinct layers of floating islands sorted by altitude, lets call them Lower, Mid and Upper for convenience. Lower and Upper are composed by medium sized ...
6
votes
0answers
128 views

What blood pigment type is immune to ammonia poisoning?

I am designing a world in which the biological solvent is an ammonia-water mixture and need help finding out which blood pigments (Hemoglobin, Hemocyanin etc.) would be immune to the negative effects ...
5
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0answers
157 views

Is my topology/are my climate zones alright?

This is my first try at worldbuilding, and I need some feedback. I've filled in what I hope are realistic climate zones, ocean currents and topology for this current state of the world, all done in ...
5
votes
1answer
141 views

How much further could ship-based radar see on a flat world?

On our spherical planet, it is highly advantageous for modern navies to have airborne radar, because it can seem much further than even the best ship-based radar, simply due to the greater distance to ...
4
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0answers
81 views

How much I can change the humanoid body plan and still be able to perform the high speed throwing?

Why keep the humanoid body plan?, which is the advantage of the humanoid shape? This were my principal questions when I was wondering about the features of different fictional specie, so I reached to ...
3
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0answers
95 views

Anatomy of a sexual parasitic specie with small and intelligent females but large and “brute” males

I already made a similar question searching for possible features which can make this fictional specie biologically functional, so this question can be considered a second part of this. I would ...
3
votes
1answer
41 views

Movement Features for Tree-Dwelling Prey Animal

I am currently creating a small creature about the size of a squirrel. It lives in the trees and eats fruit. It is the prey of a cat-like creature that has a prehensile tail and is agile and can run ...
3
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0answers
97 views

Are these ocean currents realistic for a planet that rotates 16 times slower than Earth?

Ocean Current Map: The straight red lines are 60* North and South, and the straight blue lines are 30* North and South. The curved blue lines with an arrow represent cold currents, while the curved ...
3
votes
1answer
100 views

How Many Red Dwarves Can Make One Stable P-Orbit?

Red dwarves are the most common stars in our galaxy, if not the whole universe. They are small--the largest don't exceed one-half of a solar mass--but scientists still believe in their potential for ...
3
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0answers
121 views

Is this a decent description of the process for an interstellar drive based on this handwavium/element zero?

My story needs four variations of an interstellar drive that uses exotic matter (detailed below). I know what the processes need to do, side effects of using them, etc. but explaining them/showing ...
3
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0answers
68 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
243 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 ...
2
votes
0answers
72 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
0answers
43 views

What would a carbon-based organism encounter deep in Saturn?

Saturn's predominant lifeform begins with allotropes of elemental carbon: graphene, diamond, nanotubes and geodesic shapes. These are doped in places with nitrogen, phosphorus, and germanium. (...
2
votes
1answer
79 views

How much pressure would sea level be if the atmosphere were as thick as mentioned below?

Here is how thick our atmosphere is: Troposphere: 7-20 kilometers Stratosphere: 20-50 kilometers Mesosphere: 50-85 kilometers Thermosphere: 90-1,000 kilometers Here is the thickness of the ...
1
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0answers
33 views

In this infant (<500 million years) solar system, how far would each orbit be to be stable?

Here's the story: There is a solar system that is still a baby, less than 500 million years old. There are a total of eight stars clumped into four binaries, each one with its own habitable zone. ...
1
vote
1answer
106 views

Maximum shell world planet size with earth-like conditions

I am trying to work out the theoretical limits on the size of a shell world (made with orbital rings constructed around a black hole). I have the following constraints: The light to the planet must ...
1
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0answers
56 views

Effects on World Climate without (Most of) northwest and central Europe

So I'm considering creating a fantasy setting heavily modelled on Earth with the exception that most of what we consider Northwest and Central Europe is replaced by sea. I decided to as a reference ...
1
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0answers
93 views

How Bright Would the Sky on This Alternate Earth Be? The Sequel to “The 372-Day Calendar”

Long ago, I asked how far Earth would orbit the sun if one year lasts 372 days instead of 365 and how much it'd affect the overall brightness. What I got was that Earth with a 372-day calendar would ...
1
vote
1answer
144 views

How would the Weather be on a Double Planet System?

context is always important to give a good answer to such a question. So here is some data and Renders from the System. It consists of the two Planets Hela and Vesna. Hela has a Radius of 5636.492km ...
0
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0answers
57 views

World with Demons, Merfolk, Angels, and Humans living together

I am writing a prospective scenario for a satirical horror-comedy and science-fantasy Web-series for adolescents (or teenagers if you want) and adults where humans cohabit with demons, merfolk, and ...
0
votes
1answer
73 views

Can a creature in its cocoon opalize various parts of its anatomy voluntarily?

Now, in this world I'm creating, dragons have larvae, called wyrms. There is a specific species of dragon, Spelunca meliusculus, or the superior dragon, that dwells in a special cavern. There is a ...
0
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0answers
35 views

Life in the Temperate Zone of an Alternate Earth with an Axial Tilt of 42 Degrees--What Would the Seasons Be?

Suppose that in an alternate universe, Earth has an axial tilt not of 23.5 degrees, but 42. This means that from the equator, tropical climates with binary seasons (wet and dry) would persist from as ...
0
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0answers
41 views

In a world like current Earth but where most forests have been cut down, what would be the impact on the world's Atmosphere?

In a world like current Earth but where most of the trees and forests have been cut down, what would be the impact on the world's Atmosphere, in short and long term? Would that make the world hotter? ...
0
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0answers
66 views

How Long (Or Short) Would Human Limbs Be if Proportioned Like Those of Gibbons?

Here is what I've got on Reddit about how long human limbs are in proportion to the lengths of their bodies: With regard to humans, in ideal proportions, an adult is 7.5-8 heads tall. The legs (...
-1
votes
1answer
173 views

The Serina Series: Episode III: Pterosaurs

Let's take a different route and not take the Serina route using a modern species. Today, we're looking at pterosaurs. But considering that pterosaurs had ruled the skies from the Late Triassic to ...
-2
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0answers
59 views

Creating Genetically Engineered Individuals

Let's say I want to make a genetically engineered being, who doesn't have iron-based blood, and is an improvement on humans across the board: strictly stronger, more resilient, greater lung capacity, ...