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How would an armed bipedal mech stay standing up when moving around

Before you say this is a duplicate of ceramicmrno0b’s post, his is a much larger walker than mine is. Essentially, take an at-rt, add some side armor plates so the driver is (somewhat) cased in, and ...
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0 votes
0 answers
6 views

Accelerate antarctica's post-glacial rebound

I am curious if it could be technologically feasible to accelerate antarctica's rebounding after a partial deglaciation of say 85% of its landmass. I meant rebounding its land made naked after ...
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-1 votes
0 answers
14 views

How would a tank adapt to a crustacean physiology?

Essentially, I have 10 legged and 2 clawed organism. Would the tank have many modifications versus normal tanks. Essentially, how would tanks/armored vehicles adapt to fit the crustacean in question? ...
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1 vote
3 answers
30 views

How long until all detectable space debris leaves orbit of a planet?

Let's say an extinct alien civilization inhabited an earth-like planet a few million years ago. The had a number of satellites, orbiting the planet, all of which got blown up quite violently (dealer'...
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  • 1,067
1 vote
1 answer
11 views

How might a lower gravity planet sustain a warm, earth-like atmosphere?

I've already posted something similar recently, but I don't think I was really asking the right question. I'm designing a hypothetical lower-gravity planet with 0.47M, 0.79r and 0.76g, with a similar ...
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  • 425
3 votes
3 answers
54 views

Would having nail polish applied interfere with any process in an animal's horn?

I'm talking about actual horns, not antlers that are shed. I'm interested in either a rhino-like horn or an antelope like horn. Would nail polish block any important natural process? I'm thinking of ...
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3 votes
1 answer
22 views

Tides Affecting Stellar Brightness

I'm working on a fantasy story set in a slightly modified version of the Trappist-1 system (all orbits are perfectly resonant rather than only nearly so), and I am trying to get as good of an ...
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  • 1,587
2 votes
1 answer
31 views

What are the Celestial observations and mythology on a ringed planet?

I'm building a ringed world with it's rings composed of low albedo material to try and dampen the impact the rings have during night time (that is, trying so not every single night that the rings are ...
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2 votes
2 answers
71 views

How about this Unnatural eyeball shape?

I'm designing an intelligent alien creature that lives in the jungles of a tidally locked planet, a little bit more massive than Earth, and which orbits a red dwarf. One of the things I designed about ...
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2 votes
2 answers
39 views

What could reduce sunlight on an Earth-like planet?

I want to create a world where there is very little sunlight during the day -- at noon the light would be about the same as an Earth sunset. The planet would be Earth-like until something causes the ...
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3 votes
3 answers
197 views

Were there problems for Babbage's Analytical Engine in 1850s?

Suppose that a mysterious philanthropist provided fundings for Charles Babbage's intricate projects and the Analytical Engine was finished by 1850. Surely there would be a lot of raptured academicians ...
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2 votes
1 answer
46 views

What colour is the foliage if the sky is yellowish?

I would like my planet to be inhabitable by many species and humanoids. It has a cold climate than earth. I'd like the sky to be an yellowish pale orange. Would that change the color of grass or ...
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6 votes
2 answers
417 views

Is orangeish water posible in an alien planet with advanced Life?

A planet little bigger than earth with slightly less gravity. Colder than the earth, with longer days and shorter years. And Water Prevalence: 32%: (23% Surface water / 9% Subterranean) and 2 moons. ...
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4 votes
0 answers
50 views

Acetylene and Methane biology questions

First time poster, please be gentle. Long story short, my own alien worldbuilding/speculative biology project involves the idea that cyanobacteria and other oxygen producers never evolved and other ...
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2 votes
2 answers
81 views

If Earth was less massive, with 25% less gravity and an atmosphere scaled down proportionately, how would that affect climate?

Everything else being equal, how would reduced planetary mass and gravity affect the behavior of the atmosphere and the climate?
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  • 425
0 votes
4 answers
98 views

How could I easily tell an Android from a human? [closed]

Let’s say Im in a gameshow where I’m stuck in a room with an Android for 10 minutes and I must guess if there an Android or a human. The Android looks all but identical to a human. There a few subtle ...
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3 votes
3 answers
80 views

Can a big creature have a flagellar-like motor for flying?

The flagellar motor of bacteria seems to be a perfect way to have a biological motor but since no complex multicellular creatures have used that method for flight or other uses, it must be harder to ...
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1 vote
2 answers
54 views

Anatomically Correct Winged Kappa

The Winged Kappa, or Hane No Haeta Kappa, is a type of Kappa with Wings They have a mixture of avian and chelonian features. They have a pointed beak like a bird, with the eyes and nostrils high up ...
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  • 11.8k
1 vote
3 answers
82 views

What does it feel like to be cloned at the beginning of the day and merged at the end of the day?

In my mad scientist lab, the scientist has a machine that makes a very high quality (atomic level) scan and clone of himself. The problem is, it takes some hours to work, so the mad scientist sleeps ...
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2 votes
2 answers
102 views

What geographic changes need to occur to make Southern Australia fertile?

Currently, 90% of Australia's land is inhospitable desert. What geographic changes need to occur for its southern side to become fertile soil?
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8 votes
6 answers
2k views

How do we survive in post-apocalyptical permanent nighttime (with no electricity, communication, running water, and aliens of course)?

A race of aliens have invaded Earth and they love the dark. These aliens have caused intense smoke shading to occur so that it is permanently pitch black. It has been several weeks since it went dark, ...
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4 votes
2 answers
80 views

Are there any alternative solvents to water at -180 Celsius that hypothetical cells could use?

I have been trying to find a solvent for my fluorine-based cells. I have asked if CF4 could be an alternative to water, but I am sure I can find a better replacement. Is there any liquid at ...
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3 votes
3 answers
202 views

Is a world where all the water is "heavy water" possible?

I recently discovered that there is another kind of water : heavy water. Heavy water is made of deuterium, a heavier isotope of hydrogen. Heavy water itself is 11% percent heavier than "normal&...
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  • 1,722
-3 votes
0 answers
45 views

How might a soviet coup have occurred in the wake of the Chernobyl Disaster? [closed]

On 26th April, 1986, Reactor 4 at the Chernobyl Nuclear power plant exploded. The cause was ultimately due to a complex interplay of poor design, poor construction, poor operating practice, poor ...
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  • 2,289
0 votes
3 answers
67 views

How are macro-molecules made in cells? [closed]

In my quest to make fluorine based life, to main roadblock is my confusion on how macromolecules are made. Take phospholipids for example, it confuses me how cells can just stick a phosphate to a ...
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-2 votes
1 answer
92 views

How much energy I would require to make a piston to move as fast as human muscle? [closed]

Context: Robots and exoskeletons in this fictional scenario are having a "boom" because of some random super battery that can store a lot of energy, but it can only release it in really ...
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  • 579
5 votes
8 answers
3k views

I have an armada of teleporting sky fortresses. Do I still need a navy? [duplicate]

I'm trying to flesh out the military capabilities of my universe and just started to move into defining sea power. When defining the air power I created a few things, the important ones for the ...
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5 votes
1 answer
265 views

My eusocial species has biological radio and limited verbal speech. Is this plausible?

The mechanics of biological radios are already detailed in response to this question, but I had a more specific use of it that I was planning to use. My story has a eusocial species that can ...
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  • 1,392
-3 votes
1 answer
123 views

How does interspecies romance work between fantasy races? [closed]

In my world, most of the fantasy races are very different from the typical. While there are some like ghouls, trolls, etc., there are animal people races instead of elves and dwarves. At some point, ...
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  • 897
1 vote
3 answers
131 views

How can a desert be converted into a lush rainforest with magic?

Assuming an elemental form of Magic that allows the mages to control fire, water, earth, and the wind itself (with some limited power to change states, like turning ice to steam and vice versa), as ...
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  • 302
6 votes
3 answers
676 views

What are some alternatives to tannin in plant bark?

When creating the plant life on alien planets, photosynthetic pigments other than chlorophyll can be the predominant molecule to create foliage of colours other than green, as we see on earth but for ...
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1 vote
2 answers
111 views

What percentage of saline does water need to be to become hazardous to skin?

I've not gotten many results for this and I've looked up all about chemical lakes like Lake Natron but they seem to be filled with other hazardous substances besides plain sodium chloride. I'm just ...
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  • 73
4 votes
5 answers
3k views

How do you gag a fish-person without tape?

The fish-people are hybrids of fish and humans: They have bodies akin to standard teleost fish, such as carp or salmon, with a face, brain, and throat like a human. While it would be quite easy to ...
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  • 11.8k
2 votes
7 answers
550 views

How could a civilization with infinite resources be? [closed]

For my worldbuilding project, my main alien race has been given powers by an unknown force, one thing they use their powers for is creating infinite resources, making things like money dissappear. How ...
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28 votes
14 answers
5k views

How can we make an alien atmosphere breathable, but uncomfortable?

In the project I’m working on, sufficiently advanced aliens terraformed a large number of planets in the distant past, giving them an atmospheric pressure and composition similar to Earth. This “...
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1 vote
1 answer
97 views

A meteor falls in a Mediterranean-like sea: what is the impact?

A meteor with a diameter of 300 meters crashes into the middle of a circular sea with a radius of 1500 km and with a speed of 30 km/s. Civilizations (and humanity as a whole) that are situated around ...
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  • 577
2 votes
1 answer
117 views

Is a decade-long battle in medieval times with magic possible?

Question: Is it possible to have one or multiple battles to continue for a decade or more in a fantasy medieval setting? The primary outcome required from the war is to have a constant stream of ...
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3 votes
2 answers
99 views

There is an Arcane Dome around a Continent -- What Happens Next? [closed]

So in my home-brew world, the Gods basically put a giant, magical dome around an entire continent. Nothing can enter or leave except energy, so there are no concerns about green-housing. Bear in mind ...
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  • 39
3 votes
3 answers
384 views

How do we tell a biosphere has been tampered with? [closed]

How could one distinguish a naturally evolved biosphere from one which has been manipulated in a subtle manner? Think slight genetic tweaks, targeted extinction events and so on. The process might ...
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3 votes
3 answers
213 views

How fast and how coarse does a sandstorm need to be to sand a human down to nothing in the span of an hour?

I am designing a world with extreme weather, which uses human survivability as a measure of time. I've equated something close to an hour for the time I am using, for simplicity's sake, but this poses ...
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  • 73
4 votes
2 answers
119 views

What are the effects of Increasing the gravity on Mars?

I'm interested in the Physics around increasing the gravity of Mars to make it habitable. I was unsure how to work out what gravity would be needed to retain an atmosphere thick enough to hold liquid ...
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  • 41
6 votes
2 answers
103 views

Can we have a mycelium tech-tree?

Considering the impressive complexity of the vast mycelium networks that permeate the world, I was wondering if it would be possible for a civilization to use mycelium as a "coding" ...
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  • 607
3 votes
1 answer
52 views

How to place multiple small moons and one large moon in stable orbit around an earthlike planet?

Earth has one very large, spherical moon believed to have been formed by a giant impact. Mars has two small, sorta potato-ical moons believed to have been captured. Suppose an otherwise earthlike ...
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  • 803
7 votes
5 answers
345 views

What physical effects would 3000 years have on the physiology of humans on Mars?

This is my first ever question on here. I've seen a few posts on Martian physiology but since the answers on here are answered so well and by so many I thought I'd be more specific. How would human ...
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1 vote
1 answer
59 views

Would larger oceans stabilize temperature on a smaller planet with a thinner atmosphere?

I'm working on a planet with 75% of Earth's gravity, and I'm wondering how to get a stable climate despite the thinner atmosphere. I know a thinner atmosphere doesn't trap heat well, so the ...
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  • 425
5 votes
5 answers
1k views

Why are there so many mosquitoes in the Arctic?

TL-DR: How to create a world with ecology similar to ours, that doesn't have such abominable plagues of mosquitoes in its Arctic summer? It is tempting to think of mosquitoes as a pest of the tropics, ...
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  • 4,398
0 votes
4 answers
158 views

Could a planet be cut in half and still sustain life? [closed]

Say some sort of anti-planet weapon shoots an arc of energy slicing the planet in 2, could the said planet keep it’s atmosphere and life.
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6 votes
3 answers
374 views

Evolution of flying animals on a windy planet

I'm thinking about the evolution of flight on a tidally locked planet where winds normally are 70 km/h (45 km/h) and can easily reach 120 km/h (75 mph). I've recently asked about clothes humans wear ...
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6 votes
3 answers
2k views

Are Mass Effect "style" guns possible?

In Sci Fi, the majority of weapons come in the form of either some kind of energy beam/bolt, or as testosterone-dripping slug-throwers. In Mass Effect and the Aldreaverse utilize weapons that fire ...
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  • 3,277
4 votes
4 answers
692 views

Why would some species from the Homo genus be much more likely to be autistic than Homo sapiens?

In my world, there are three species from the Homo genus that make together a clade called "aquatic humans": merfolk (Homo maritimus) (their scientific name means "marine human"), ...
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