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13.1k posts
 
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Q&A Reality Check: Plausibility of a new kind of sentient alien race: Split prehensile tail, quadrupedal, very floofy!

In building an sentient alien that is unique among the sea of humanoids, I aspire to explore quadrupeds. For a quick visual reference, this is what I have: proportions are definitely off, but in ...

6 answers  ·  posted 5y ago by Duncan‭  ·  last activity 5y ago by Duncan‭

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Q&A Meterology of double planets sharing an atmosphere

If two planets were tidally locked and shared an atmosphere, as described in this question, what would the weather patterns of the planets be like? What weather patterns would form, and could these...

1 answer  ·  posted 5y ago by tox123‭  ·  last activity 5y ago by tox123‭

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Q&A What would happen to a human dragged quickly from the surface to the mesopelagic zone?

My mermaids have returned, and now they're dragging semi-conscious people about 700-ish meters underwater. Is it realistic for the person to still be alive at this point? (Y'know, for about ten sec...

4 answers  ·  posted 5y ago by Guest‭  ·  last activity 5y ago by Guest‭

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Q&A MacGyvering medieval poison

Does anyone know of any compound/substance one could have access to in a stone prison cell (From food? The rocks? The metal bars?) that could be processed through rudimentary means into a quick act...

5 answers  ·  posted 5y ago by Mario Garcia‭  ·  last activity 5y ago by Mario Garcia‭

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Q&A How to get directions in deep space?

A spaceship crew, during their interstellar travel loses control of the spaceship for a few hours due to external factors (exact factor not important). This causes the spaceship to deviate from its...

12 answers  ·  posted 5y ago by Arkadipta Sarkar‭  ·  last activity 5y ago by Arkadipta Sarkar‭

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Q&A What is the earliest time a pulsejet could be built?

Let's assume that some wealthy characters somehow find the plans for a valveless pulsejet. How is not important. Maybe there was a time travel incident, or some Atlantean book was unearthed, or som...

5 answers  ·  posted 5y ago by Eth‭  ·  last activity 5y ago by Eth‭

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Q&A How long would it take for a centaur's broken leg to heal?

My fantasy world is medievalesque in technology. While healing magic exists, most centaurs do not have realistic access to it. Centaurs are your archetypal human torso, horse body. How long would i...

2 answers  ·  posted 5y ago by mVitus‭  ·  last activity 5y ago by mVitus‭

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Q&A Can rocky hills similar to the Scottish highlands be located next to a bog?

I've written about these rocky hills with short grass, gravel, shrubs, and big boulders. At the bottom of one of the hills is a big bog. Basically I've designed some buildings to be sticking out of...

1 answer  ·  posted 5y ago by Julia‭  ·  last activity 5y ago by Julia‭

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Q&A Atmosphere that makes people wear masks for breathing

(I'm new here, so I apologize in advance if I do something wrong) TL;DR of what I'm looking for: A substance (natural or artificial) that... can be suspended in an atmosphere is harmful to bre...

3 answers  ·  posted 5y ago by Ramo'sBored‭  ·  last activity 5y ago by Ramo'sBored‭

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Q&A Minimum tech level to invent core memory

Magnetic core memory was a critical innovation in the development of computers. Per https://en.wikipedia.org/wiki/Magnetic-core_memory it was the most advanced form of memory from about the mid-fif...

1 answer  ·  posted 5y ago by rwallace‭  ·  last activity 5y ago by rwallace‭

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Q&A Object in the orbit or orbiting Uranus's moon Puck

I realize the response to this question is fairly involved but here goes. I need to have an alien spacecraft either in orbit around Uranus's moon Puck or somewhere in Puck's orbit around the planet...

3 answers  ·  posted 5y ago by James‭  ·  last activity 5y ago by James‭

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Q&A How to define operational altitude on other planets?

Since different planets have different gravity, atmospheric pressure, air density and composition, it's obvious that a definition of operational altitude based on earth sea level is inadequate for ...

4 answers  ·  posted 5y ago by Inquisitive Geek‭  ·  last activity 5y ago by Inquisitive Geek‭

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Q&A Most bit efficient text communication method?

What would be the most efficient text communication method for a spacecraft operating on a super low bit rate (I'm talking something like 5 bits an hour, excluding error handling)? As you want bo...

13 answers  ·  posted 5y ago by Exostrike‭  ·  last activity 5y ago by Exostrike‭

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Q&A Velocity Difference From Teleportation

In Steven Gould's Jumper series, the main character has the ability to teleport, and he eventually realizes he automatically does frame matching when doing so - no matter where on earth his origin ...

5 answers  ·  posted 5y ago by Trevortni‭  ·  last activity 5y ago by Trevortni‭

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Q&A How to tell that you are a giant?

In my novel, my main character has come from earth to a fantasy world. She has been reborn on an island of giants (10-meter tall humanoids) where everything is scaled up to match what they would lo...

16 answers  ·  posted 5y ago by Sparrowonfire‭  ·  last activity 5y ago by Sparrowonfire‭

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Q&A Can an alien society believe that their star system is the universe?

Throughout history, humanity has made a few scientific blunders where a scientific principle held as fact for hundreds of even thousands of years is found to be completely or mostly false. Our s...

18 answers  ·  posted 5y ago by Elessar‭  ·  last activity 5y ago by Elessar‭

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Q&A Can my heraldic dragons fly?

Heraldic Dragons Heraldic dragons are the creations of a mad god, called Anon, designed after the classical six-limbed ones. Measurements: Head+neck length: 180 cm Body length: 180 cm Height at...

2 answers  ·  posted 5y ago by Mephistopheles‭  ·  last activity 5y ago by Mephistopheles‭

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Q&A Gastric acid as a weapon

The dragons in my fantasy world spit fluid from their mouths when threatened, which upon contact causes a burning sensation. I could have this liquid be standard venom, like modified saliva, but I ...

3 answers  ·  posted 5y ago by SealBoi‭  ·  last activity 5y ago by SealBoi‭

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Q&A What would be the ideal power source for a cybernetic eye?

After nearly a decade of development and public prototypes, the Mizaru company is ready to unveil the cybereye. A fully cybernetic eye that provides its user/host with high definition vision, enhan...

22 answers  ·  posted 5y ago by Celestial Dragon Emperor‭  ·  last activity 5y ago by Celestial Dragon Emperor‭

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Q&A Medieval/ancient/fantasy setting in southern hemisphere?

I was unfortunate enough to imagine an ancient setting upside down. I started out with small features and, after connecting them, got the following: cold ^ | sun...

3 answers  ·  posted 5y ago by Dallaylaen‭  ·  last activity 5y ago by Dallaylaen‭

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Q&A What survivable events would make Earth least inhabitable?

I am interested in events that would so radically change Earth (for the worse) that it would be near uninhabitable for humans. The event may or may not be deadly to humans, but the world it leaves...

8 answers  ·  posted 5y ago by ben‭  ·  last activity 5y ago by ben‭

Question apocalypse survival
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Q&A What items from the Roman-age tech-level could be used to deter all creatures from entering a small area?

Please assume the following: There is a item on the ground and I want nothing but bare earth touching it. I cannot move the item myself. The item is impervious to fire. I cannot afford to guar...

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

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Q&A Need a suitable toxic chemical for a murder plot in my novel

I need ideas for a chemical or disease which kills the victim upon holding it in the palm for about 4 or 5 seconds. The death isn't necessarily immediate, as it might take days to kill the victim i...

8 answers  ·  posted 5y ago by user63214‭  ·  last activity 5y ago by user63214‭

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Q&A How could somersaulting worms evolve?

In Wayne Douglas Barlowe's classic book "Expedition" he has many strange creatures. One that intrigues the most is this one, the flipstick. It has two feet on either side and uses them to flip th...

3 answers  ·  posted 5y ago by Joe Smith‭  ·  last activity 5y ago by Joe Smith‭

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Q&A What phenomenon (gravitational?) in space would allow the transfer of humans rapidly between two planets or system-wide?

So what I'm looking for is some plausible idea of two human planets, orbiting each other closely, that despite having regressed to a medieval homage, were capable in this old era of powering solar ...

3 answers  ·  posted 5y ago by Naga‭  ·  last activity 5y ago by Naga‭