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13.1k posts
 
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Q&A Split-brain double identity

My character have a split brain (severed connection between left and rigt hemispheres). What is unique about his case is that not both hemispheres have the same identity any more. From what I und...

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

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Q&A Balancing Water Vapor and Temperature for Global Cloud Layer

BACKGROUND: I have been working on a game called Rise: The Vieneo Province. Vieneo is a terrestrial moon (all details can be found here) but we have an atmospheric composition we arrived on from ...

1 answer  ·  posted 7y ago by Jason Reskin‭  ·  last activity 7y ago by Jason Reskin‭

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Q&A Is it conceivable, or at the least verisimilar, for Plutonium radioisotope generators/atomic batteries to power a small manufacturing town?

A small manufacturing town serves as a comparison. The worldbuilding significance is for an underground facility with, in addition to a medical center, small-scale chemical production, a machinist ...

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

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Q&A A world without bacteria

According to a recent paper from the university of Edinburgh, the ground of Mars contains a lot of perchlorate, which combined with the high level of ultraviolet radiation, makes a very bacteria ho...

3 answers  ·  posted 7y ago by Vincent Teyssier‭  ·  last activity 7y ago by Vincent Teyssier‭

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Q&A Warming up Mars

The vast majority of the sun's energy is wasted -- the light and warmth are sent out in a spherical shape, and the planets only pick up those little bits of energy that happen to be going in the ri...

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

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Q&A Can two moons orbit each other while orbiting a much larger planet?

Trying to work out mechanics and visuals from one of two moons orbiting a gas giant. My idea is that the moons are tidally locked so they can never see each other's backsides, but this might be ach...

4 answers  ·  posted 7y ago by CatParty88‭  ·  last activity 5y ago by CatParty88‭

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Q&A What is a medieval technology method of underwater enemy detection?

I am writing a DnD module where fishmen are invading island nations. The islands would naturally have adapted to this in some way as the raids have been happening for years. What method would these...

17 answers  ·  posted 7y ago by danielson317‭  ·  last activity 7y ago by danielson317‭

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Q&A How thick should the roof of a large cave be to safely build a city on top of it?

Fullmetal Alchemist (2003) features a giant (and I mean stupidly big) cave under a large and busy metropolis. Nobody is aware of its existence, which means that at least since the city's founding (...

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

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Q&A A predator with pseudo-invisibility, partially achieved by airborne chemicals

So for a story I'm working on I thought of a forest-dwelling predator (see the image for a design) which has a skin very sensitive to light (not in a painful way, just that it notices differences i...

3 answers  ·  posted 7y ago by Lorenzo Loorbach‭  ·  last activity 7y ago by Lorenzo Loorbach‭

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Q&A How would a thinner atmosphere affect climate/weather patterns?

Okay, so imagine a situation where most of earth's atmosphere is lost, the pressure at sea level is somewhere around 0.3 atm. If it matters, let's say that this is the result of the gradual escape ...

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

Question climate atmosphere
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Q&A Is this fictional planet possible?

I was trying to make an interesting moon of a gas giant similar to Jupiter with a liquid ocean of water. The moon orbits in the equivalent orbital space of Io and is about twice the size of Mars. T...

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

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Q&A Is a star orbiting around planets(not a single planet) possible?

I'm trying to construct a habitable world which has a sun orbiting around it. I know a star can't orbit around a planet, because a star is much more massive than a single planet, which has been kno...

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

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Q&A Is a 1:1 Earth possible in a binary system?

I'm trying to build as close to a 1:1 Earth as possible, but finding information on a non-jovian moon-based planet is extremely hard to find. I tend to ramble trying to explain things in a non-list...

4 answers  ·  posted 7y ago by 1312412‭  ·  last activity 7y ago by 1312412‭

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Q&A The other side of the moon!

As the moon is tidal locked, she is always showing the same side turned toward Earth. How could I give her a little rotation, allowing us to see the other side, without destroying the earth's curre...

2 answers  ·  posted 7y ago by Drag and Drop‭  ·  last activity 7y ago by Drag and Drop‭

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Q&A Force Field Contains a Star

How would you contain a small star in order to draw energy from it, and power a ship? I'm thinking along the lines of a force field. I need the star visible from the exterior of the ship for aes...

9 answers  ·  posted 7y ago by Zach Reitmeier‭  ·  last activity 7y ago by Zach Reitmeier‭

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Q&A 4D Digestive System Structure

Note: I'm talking about a fourth spatial dimension. As far as I can tell, a 2 dimensional creature has one possible digestive system structure; have a cavity inside its body connected to the outsi...

2 answers  ·  posted 7y ago by Alex Binnard‭  ·  last activity 7y ago by Alex Binnard‭

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Q&A How to calculate maximum altitude difference between metro stations?

For story purpose I am trying to design a mass transit system for a perfect city. Right ... maybe not so perfect, if you look carefully into the details, but actually the mass transit system is sup...

2 answers  ·  posted 7y ago by Shadow1024‭  ·  last activity 7y ago by Shadow1024‭

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Q&A Is it possible to have a non tidally locked moon?

Fo my question, I'd like the moon to orbit around a saturn-like planet without rings. This moon would be located at a million kilometers away the host planet. the moon's size would be about 12 000...

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

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Q&A Calculating the orbits of binary stars around their barycentre

I've been building a world, partly for test reasons (making sure my spreadsheet works, and so i know what i need to add to it) and partly for fun, but for calender reasons i need to know the orbita...

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

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Q&A If the world caught on fire how long would it take to burn?

If one forest fire couldn't be contained and it spread across the world how long do you think it would take for 90% of the world to catch on fire, burn, and then burn out? Also, while the world wa...

1 answer  ·  posted 7y ago by M.McKean‭  ·  last activity 7y ago by M.McKean‭

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Q&A Toxic nerve agent in humanoids?

In my world, wood elves use magic charms and illusions to ensnare their prey. They have a very opportunistic diet as they eat anything that walks into their forest. After consumption they sleep for...

4 answers  ·  posted 7y ago by Jordan Williams‭  ·  last activity 7y ago by Jordan Williams‭

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Q&A Is my celestial coordinate system efficient?

I want to know whether or not my starship's cordinate system is efficient or not. Soon after my race flew into the stars, we realised we needed to be able to tell where we were. We need coordinate ...

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

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Q&A Could canals solve H G Wells Martians water shortage problems?

Could a world similar to that envisioned in the Mars of Edgar Rice Burroughs / H G exist? And if so would canals be a practical way to make the planet habitable over the long term? For current pu...

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

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Q&A How does a solar sail return to its world?

While trying to figure out a way that individuals could own spacecraft in my sci-fi setting without having access to things that could double as weapons of mass destruction, I settled on the widesp...

8 answers  ·  posted 7y ago by System‭  ·  last activity 7y ago by System‭

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Q&A Can a planet's axial tilt turn to always be facing its star?

In my particular scenario, There is an habitable exoplanet in which the axial tilt turns to always face the system's star, and the planet is not in tidal lock, this allows for a certain range o...

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