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13.1k posts
 
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Q&A What is a reasonable sensitivity for this race's sense of smell?

If there were a group of primates very similar to humans, and they had vomeronasal organs, what should the sensitivity or accuracy of such organs be? The race has a lengthened face to accommodate ...

1 answer  ·  posted 7y ago by Cas‭  ·  last activity 7y ago by Cas‭

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Q&A Understanding which materials can be found on planets

I am making a science fiction computer game where you can travel between planets. I would like the planets all to have some kind of differing materials. Now I have no idea about which kind of "mate...

5 answers  ·  posted 7y ago by fubal‭  ·  last activity 7y ago by fubal‭

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Q&A Reason for an exterior control panel on a space ship

In my story, the AI on a space ship has been corrupted, causing it to try to kill all living occupants. The ship is on a collision course with a planet, and the main controls are inoperable due t...

31 answers  ·  posted 7y ago by ScienceKeanu‭  ·  last activity 6y ago by ScienceKeanu‭

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Q&A Could Servals be trained to hunt

The Serval is a fairly muscular, dog sized African wild cat. While doing research on them for other worldbuilding purposes, I began to think that these animals could make great hunting pets, if t...

2 answers  ·  posted 7y ago by Uncle Tres‭  ·  last activity 7y ago by Uncle Tres‭

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Q&A Amount of Farmland Needed to Produce Biodiesel

Consider a post-Apocalyptic society of collective farmers that has access to a waning supply of modern farm supplies, a small, independent power grid, and a enough knowledge to keep themselves fed ...

2 answers  ·  posted 7y ago by Geoffrey Carlton‭  ·  last activity 6y ago by Geoffrey Carlton‭

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Q&A What evolutionary pressures could turn a group of divergent hominids into matriarchal giants?

QUESTION Other questions have covered what the physical structure of a humanoid giant might look like. Assuming that anatomically modern humans (or something close) were dispersed into several dis...

3 answers  ·  posted 7y ago by Random‭  ·  last activity 7y ago by Random‭

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Q&A How safe would be living in a space-time highly distorted planet

Imagine a planet - henceforth Planet X - that is orbiting very close to a black hole. The space-time distortion will be very high there and according to the theory of relativity, the time there wil...

1 answer  ·  posted 7y ago by Daniel Ortega‭  ·  last activity 7y ago by Daniel Ortega‭

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Q&A Would the early invention of the microscope naturally lead to better metallurgy or steel?

QUESTION It's been established that one could invent microscopes early with a magnification of up to 1500x. It occurred to me, though I really know nothing about this, that putting metals under a...

2 answers  ·  posted 7y ago by Random‭  ·  last activity 7y ago by Random‭

Question metals
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Q&A corrected projections: Is this world map realistic? I tried to use plate tectonics to inform my mountain and island chain placements

1 degree of latitude = 96.57 km. Equirectangular projections. (Yes, I need to revise the polar regions to make sure they don't get squished.) Obliquity of Jasmi: +31.1 degrees. Radius of Jasm...

2 answers  ·  posted 7y ago by Rúnatál Davino‭  ·  last activity 7y ago by Rúnatál Davino‭

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Q&A Detritivore farming

So I have this intelligent alien race of detritivores and I was wondering if it would be more practical for them to be a farming society or a hunter-gatherer society. I don't know if this is very ...

9 answers  ·  posted 7y ago by Amoeba‭  ·  last activity 6y ago by Amoeba‭

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Q&A Can a fission satellite duplicate the radiance frequencies of a star?

I sometimes think about the arrogant dwarf starsmiths in the question. How to blow up a star by accident? I pose the question in the voice of the dwarf, probably because I am hungry for down votes...

2 answers  ·  posted 7y ago by Willk‭  ·  last activity 7y ago by Willk‭

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Q&A How could a human like species adapt to change colour?

So in my world I've got a mostly human like species but they've evolved to camouflage, specifically colour change. The world is an earth-like medieval fantasy. The different parts that appear to ch...

2 answers  ·  posted 7y ago by ArcWraith‭  ·  last activity 7y ago by ArcWraith‭

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Q&A What mass would it take to turn Jupiter into a star?

I'm writing a science fiction story based on: turning Jupiter into a star. colliding Callisto and/or Io into Ganymede to increase mass and changing the orbit to provide warmth, atmosphere, and r...

2 answers  ·  posted 7y ago by Richard Servatius‭  ·  last activity 7y ago by Richard Servatius‭

Question astronomy physics
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Q&A What atmospheric composition do I need to sustain Earth-like temperatures at my planet's orbital distance; how close should my asteroid belt be?

I need to heat my planet and I've decided that the two most plausible and controllable ways to do so are by increasing the amount of bombardment by meteoroids from a nearby asteroid belt, and by ti...

2 answers  ·  posted 7y ago by Rúnatál Davino‭  ·  last activity 7y ago by Rúnatál Davino‭

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Q&A Is a snowball planet a necessary step in the evolution of a life-sustaining ocean planet?

Still working on that world with with a 93% ocean covering. My star Xat is 1.71 LSol, and my planet Jasmi orbits at 2.14 AU. I've been warned that the resulting apparent brightness of about 37% Sol...

2 answers  ·  posted 7y ago by Rúnatál Davino‭  ·  last activity 7y ago by Rúnatál Davino‭

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Q&A How do I design the solar transit of a hot Jupiter?

BACKGROUND The world I'm designing currently has a gas giant of the type known as a hot Jupiter orbiting close to the sun and causing solar flares. I would like the inhabitants of my Earth-like wo...

2 answers  ·  posted 7y ago by Random‭  ·  last activity 7y ago by Random‭

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Q&A If you dug to the center of the earth would you get stuck in an infinite gravitational pull loop?

I was wondering what would happen if you dug to the center of the earth. Would you get stuck in an infinite gravitational pull loop, or would you just simply get torn in between the two pulls? Yes,...

1 answer  ·  posted 7y ago by AdrienDaBoss‭  ·  last activity 7y ago by AdrienDaBoss‭

Question gravity earth
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Q&A Solid ribcage humanoid

Can a humanoid that doesn't have ribs but instead has solid bone plates function properly ? Imagine plates starting from upper trapezius to the lower back and the obliques but leaving open the bell...

2 answers  ·  posted 7y ago by Evocation‭  ·  last activity 7y ago by Evocation‭

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Q&A How high would a space elevator need to be on Mars?

So I have been doing a lot of reading on space elevators/tethers for a SciFi book I am writing and unfortunately there doesn't seem to be a whole lot of info on building one on Mars rather than Ear...

8 answers  ·  posted 7y ago by TitaniumTurtle‭  ·  last activity 5y ago by TitaniumTurtle‭

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Q&A Swimming in the rain?

This question is inspired by salmon swimming up waterfalls. I am aware that it is an entirely different thing, but I felt that it was worth mentioning in understanding the question. "What would ne...

5 answers  ·  posted 7y ago by JustSnilloc‭  ·  last activity 6y ago by JustSnilloc‭

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Q&A How does the air remain stationary in The Big Blue?

The Parachute Cities fall endlessly, ploughing their way downwards through an infinite blue sky. The Big Blue is a universe of sorts. It certainly has no bottom, but it does have a concept of "˜do...

2 answers  ·  posted 7y ago by Joe Bloggs‭  ·  last activity 7y ago by Joe Bloggs‭

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Q&A What is a plausible way to fuel highly active volcanism and seismic activity on my planet?

I thought that a large, close moon might help generate enough heat and stress to raise the average temperature on my world and stave off a Snowball Earth scenario. According to this article and thi...

2 answers  ·  posted 7y ago by Rúnatál Davino‭  ·  last activity 7y ago by Rúnatál Davino‭

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Q&A Drop capsule shape

Sci-fi setting where cargo is being shipped to colony worlds. If a spaceship has to land and take off again, that costs a lot of money, so that mode of transport is reserved for people and urgent, ...

6 answers  ·  posted 7y ago by rwallace‭  ·  last activity 7y ago by rwallace‭

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Q&A Would crystal-asteroids filled with a gas like iodine be plausible to refract light into making a coloured sky?

So I would like a coloured sky in my world, but I want it to be plausible. I'm not so good at science and the like but I've been doing a lot of research. If crystal-like asteroids filled with col...

1 answer  ·  posted 7y ago by graeciamagna‭  ·  last activity 7y ago by graeciamagna‭

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Q&A What would the impact of 2 suns have on the development of humanoid ocular organs?

How would the human eye have developed differently on a planet with two suns? One sun will be a yellow star functionally the same as Sol and the other will be a red dwarf. The planet will be ea...

2 answers  ·  posted 7y ago by James‭  ·  last activity 7y ago by James‭