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13.1k posts
 
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Q&A Ovulation dependent menstrual cycle?

So my Keplerians have a menstrual cycle that typically lasts 45 days on average. My proposed menstrual cycle is dependent on ovulation. So multiple ovulations without a period could occur but multi...

1 answer  ·  posted 6y ago by Caters‭  ·  last activity 6y ago by Caters‭

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Q&A Is it possible to have a Earth-like planet with a red moon, similar to the color of Mars?

With Mars' color coming from the iron oxide, is it possible for such a small body without an atmosphere to support that color?

6 answers  ·  posted 6y ago by MD3828‭  ·  last activity 6y ago by MD3828‭

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Q&A What would happen if the Earth struck a tiny but immovable object

We are living on this big lump of rock called the Earth, drifting ever so continuously through space. Now imagine a tiny but immovable object in space, a single atom of 'unexplanium', locked in sp...

11 answers  ·  posted 6y ago by Martijn‭  ·  last activity 6y ago by Martijn‭

Question space physics earth
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Q&A Scientifically accurate frost giants

In my fictional world I am planning to have a humanoid species living on an arctic continent, and I am wondering what type of biological adaptations a humanoid (as in, anatomically modern humans or...

3 answers  ·  posted 6y ago by Nascence‭  ·  last activity 6y ago by Nascence‭

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Q&A Could an intelligent worm-like race invent and build computers?

We have a regular Earth as we know it, but instead of humans, there is this worm-like race, intelligent similarly as nowadays humans. Their inner physiology is different from our worms (and not imp...

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

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Q&A Entelodont domestication

Description So fellas have you ever head of pig from hell, well if you haven't its called the Entelodont and it is an extinct pig like omnivorous mammal that resembles a giant boar. It is thought ...

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

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Q&A The Multi-Purpose Horse: Stage I: Icelandic x Yakutian

I am in pursuit of, as the title says, a multi-purpose horse, a single breed that can do all the things that the others were only specialized for: travel, labor, companionship, war, speed, strengt...

2 answers  ·  posted 6y ago by JohnWDailey‭  ·  last activity 6y ago by JohnWDailey‭

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Q&A Creating a scientifically semi-valid super-soldier, part 7: Hearing

Previous parts here: Creating a scientifically semi-valid super-soldier, part 1: Skeleton Creating a scientifically semi-valid super-soldier, part 2: nervous system Creating a scientifically sem...

3 answers  ·  posted 6y ago by Demigan‭  ·  last activity 6y ago by Demigan‭

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Q&A killer mechanism/organism similar to rust and virus

I need a mechanism/organism similar to rust and virus, that will both impair the ship's components AND will kill crew, so the only thing left are a few lucky survivors on a crippled ship. Presumab...

3 answers  ·  posted 6y ago by ken‭  ·  last activity 6y ago by ken‭

Question biology chemistry
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Q&A Why would males exist in species with hermaphrodites?

I'm designing a world with a humanoid race, which has two sexes, male which is analogue to human male, and hermaphrodite which is analogue to human women with additional male reproductive organs, l...

4 answers  ·  posted 6y ago by hozagi‭  ·  last activity 6y ago by hozagi‭

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Q&A How could a human be corrupted into a demon?

In many stories, the transformation of human to demon has been interesting to think about. This of course extends to mythology: In multiple folklore, it's said that Lilith became a demon of her ow...

4 answers  ·  posted 6y ago by TGCF ‭  ·  last activity 5y ago by TGCF ‭

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Q&A Sonar Jamming Squids

Context In the arms race of survival many animals have developed ways of evading predators, but the animal I am interested in for this question would be the tiger moth. So basically these guys jam...

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

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Q&A Could scientists test a theory of everything?

I'm ready to reduce a certain amount of scientific rigor for a good story. In my world, some person invents a theory of everything. Is there a way that scientists would test the theory, to prove t...

10 answers  ·  posted 6y ago by negib‭  ·  last activity 6y ago by negib‭

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Q&A Avian-human: Arms or Wings

I've seen bird-human hybrids before in popular fiction, where they have legs, wings, AND arms. So I was wondering if this was really plausible. Humans don't want to give up the ability to manipulat...

2 answers  ·  posted 6y ago by Skye‭  ·  last activity 6y ago by Skye‭

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Q&A What atmospheric density would be required to allow a human being to fly without wings?

How dense would an atmosphere (that's presumably non-toxic) need to be in order for a human being (without wings, artificial or otherwise) to achieve unassisted flight (without killing said person ...

4 answers  ·  posted 6y ago by Not the letter A‭  ·  last activity 6y ago by Not the letter A‭

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Q&A Why would anyone build robots when they have human rights?

I have read (and answered) the question: "If true artificially intelligent robots could be built, would they be allowed human rights?". But let's explore the topic from the other direction. Let's...

20 answers  ·  posted 6y ago by Philipp‭  ·  last activity 5y ago by Philipp‭

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Q&A Could a member of an aquatic species survive a direct shot of the swim bladder?

So, on the planet Aqautas, the Aquata species is the apex species. They have cities underwater, made of an alien coral, and submarines to get around the planet. Crime is also an issue however. The ...

2 answers  ·  posted 6y ago by DT Cooper‭  ·  last activity 6y ago by DT Cooper‭

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Q&A Is petrifying vision plausible in an animal?

Note: this question is not a duplicate. The accepted answer to the question "Anatomically correct Medusa" explains the petrifying vision via calcifying toxins spat from the snake hair. This a) woul...

6 answers  ·  posted 6y ago by SealBoi‭  ·  last activity 6y ago by SealBoi‭

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Q&A Would a planet appear to wax and wane as observed from its moon?

Assuming that the observer is on the moon for a full lunar cycle, would the appearance of the planet wax and wane, would the moon's shadow occlude the planet during an eclipse while on the moon?

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

Question space planets moons
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Q&A Can I have droplets of fluids that aren't... well... droplets?

For a story I am drafting I would like to have droplets of fluid that form another shape than the regular domed droplets we usually see. Is there any other shape such as e.g. a doughnut-shape that ...

9 answers  ·  posted 6y ago by dot_Sp0T‭  ·  last activity 5y ago by dot_Sp0T‭

Question physics
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Q&A Making a spaceplane out of the 747

Spaceplanes are cool. SSTOs (Single Stage To Orbit) are even cooler. Imagine a spaceplane that is pretty much a 747. Imagine if Boeing decided to have a crazy new idea and made a space variant of ...

6 answers  ·  posted 6y ago by Victorbrine Cassini‭  ·  last activity 6y ago by Victorbrine Cassini‭

Question space technology
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Q&A Could this bio-luminescent "human" species be plausible?

I am currently working on a world with a "human" species. The planet is similar to ours and these "humans" would evolve in a similar environment. I know that bio-luminescence appears mainly where ...

3 answers  ·  posted 6y ago by B.V.‭  ·  last activity 6y ago by B.V.‭

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Q&A Feasibility and consequences: the cosmic dance of twins habitable moons

I am aware of being a newbie in the field I am asking my question... please be kind and explain what I did wrong if I make a mistake. The idea from where the problem bloom I love worldbuilding. W...

1 answer  ·  posted 6y ago by Sasugasm‭  ·  last activity 6y ago by Sasugasm‭

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Q&A How can I make a Venusian computer?

In my story, the humans of Earth have finally made the trek to Venus, and have discovered a previously unknown life form on Venus. On closer inspection of the mucus creatures, they seem to have the...

3 answers  ·  posted 6y ago by Anoplexian - Reinstate Monica‭  ·  last activity 6y ago by Anoplexian - Reinstate Monica‭

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Q&A Sexual pleasure in anemophile reproducing humanoids

This species of humanoids has a peculiar way of reproducing. Instead of the usual physical intercourse between a male and a female, followed by the sperm cell merging with the egg cell to generat...

5 answers  ·  posted 6y ago by L.Dutch - Reinstate Monica‭  ·  last activity 6y ago by L.Dutch - Reinstate Monica‭

Question biology sex humanoid