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Q&A Why would a bird have split wings?

On my world there is a creature that has a 'split' in the plumage of its wings and tail. Instead of having a singular D-shaped surface (when viewed from above, the bird facing to the left), it is ...

7 answers  ·  posted 5y ago by A Lambent Eye‭  ·  last activity 4y ago by A Lambent Eye‭

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Q&A Could there be something like aerobatic smoke trails in the vacuum of space?

Whether exhaust from a solid rocket engine, or something released by spaceships in flight (like aerobatic smoke in the atmosphere), could extended trails behind a ship be created that would not dis...

6 answers  ·  posted 5y ago by Bob516‭  ·  last activity 5y ago by Bob516‭

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Q&A How feasible is this gravity-altering exotic matter I've conceived? Would it have any unforseen consequences?

Ok so I was thinking about a way to hypothetically have undiscovered elements with bizarre properties (for unobtainium purposes). And an idea hit me: replace nucleons with heavier but stable counte...

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

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Q&A Could a form of acoustic levitation be used as artificial gravity?

So I heard about this thing on vsauce a while ago, where scientists use this thing called "acoustic levitation". They use ultrasonic frequencies to levitate various substances, for use of studying ...

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

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Q&A What would a Dragon have to exhale to cause rain?

In a fantasy world I've been working on Dragons are venerated by many for their ability to seemingly summon rain where ever they roam. It's common for the peasantry of the south to leave offerings ...

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

Question weather dragons
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Q&A Could we build a massive "Ark" type space station with current technology?

Armageddon is coming. A giant Texas-sized meteorite on a collision course with planet Earth is discovered in 2020. It will hit Earth in 2030 and will wipe out 90% of living things including humanit...

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

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Q&A How significantly would the course of rivers change over 10,000 years?

This one is rather straightforward. A character falls into a magically-induced coma for about 10,000 years and then wakes up to find the world around him different in quite a few ways. There's not ...

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

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Q&A How could a marilith evolve?

Mariliths are these D&D creatures that are basically nagas except with six arms. OK, technically this image is from Final Fantasy, but you get the point. What environmental factors could cau...

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

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Q&A Brain Micromanagement

Imagine a creature much like ourselves that can control the usage of their own mind. For example, a dying ancestor may tell some parting words which are so important that the individual explicitly...

2 answers  ·  posted 5y ago by A Lambent Eye‭  ·  last activity 5y ago by A Lambent Eye‭

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Q&A Could a black hole be used to lessen surface gravity on a Super-Earth?

Due to the moon's gravitational pull, objects at Earth's surface directly under the moon are slightly lighter. This tiny lessening of gravity would also take effect if the moon were on the exact op...

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

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Q&A Can tectonic plates have any shape and size or are there limitations?

I would like to create a map with the help of tectonic plates. I didn't really care before. Can tectonic plates have all possible sizes and shapes? As an extreme example, could a continent the size...

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

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Q&A What non-primate animals have similar blood to humans?

I am writing about a blood magic cult, and they drink/paint with collected blood to preform rituals and bursts of magic. Most of their supply is garnered through the use of human cattle, but in a p...

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

Question humans fauna blood
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Q&A Could usable TNT be manufactured in the American Civil War?

Around the American Civil War period, TNT and nitroglycerin were discovered. This made me wonder... what if a more effective recipe for TNT was developed, and efforts were made to manufacture it? ...

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

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Q&A How Would We Reverse the Spin of the Earth?

I've seen multiple posts on destroying the Earth, but is it possible for humans to reverse the spin of Earth? In order words, considering modern technology at our disposal, is it possible for hum...

6 answers  ·  posted 7y ago by NL628‭  ·  last activity 7y ago by NL628‭

Question earth modern-age
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Q&A How fast could a hominid evolve to run?

This is question is related to the medieval world from my earlier question in which several types of intelligent hominids evolved in isolation, until they were rediscovered, conquered, and bred int...

4 answers  ·  posted 7y ago by Random‭  ·  last activity 6y ago by Random‭

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Q&A Placement of redundant containment systems?

In the near future humanity discovers a spatial anomaly at a point located somewhere between the orbits of mars and earth. This anomaly quickly induces delirium in anybody who approaches it and eve...

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

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Q&A Train-World: Feasibility of radioisotope steam-electric engines

...It's paradox. They left us these technological marvels, yet with all their might and knowledge they failed to prevent their own doom... Excerpt from a lecture by the High Historian of Berli...

2 answers  ·  posted 7y ago by dot_Sp0T‭  ·  last activity 7y ago by dot_Sp0T‭

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Q&A Is this subspeciation plausible?

Below is a diagram showing transverse cross sections of skulls representative of the two subspecies (A and B) of the Trilateral* species. Is it plausible that such obvious differences "“ noting the...

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

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Q&A Reasons for pregnancy to be difficult in long-term space travel

I am looking for medically viable reasons why we might discover it to be more difficult than expected to bring pregnancies to term in space. This is for a society based approximately 75 years in th...

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

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Q&A How much gravity should I have on my spaceship?

The starship 'Exciting Undertaking' has set off on a brand new five and a bit year expedition to explore the galaxy. To make such a starship possible, an artificial gravity generator had to be inve...

4 answers  ·  posted 7y ago by kingledion‭  ·  last activity 6y ago by kingledion‭

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Q&A What qualities could a hominid evolve to make it a better farmer?

BACKGROUND I'm working on a medieval world in which homo sapiens domesticated several other species of intelligent hominids during their prehistory, at first enslaving them to take advantage of sp...

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

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Q&A Aliens with freezing powers

So I have been doing some thinking and I now am trying to design some aliens who can exhale very cold gasses or cool the atmosphere around them as a side effect of their metabolism and also survive...

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

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Q&A What (and how long) would it take for all the water from a Great Flood to go away? How much would such an event shape the geography of the world?

Many worlds have an apocalyptic/cataclysmic event. If mine is a Great Flood, how long would it take for much of the world to be habitable land again? Keep in mind, by the events of the present, the...

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

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Q&A How could mankind of ancient times cause significant climate change?

They don't posses any advanced knowledge, their knowledge is in fact irrelevant, just their possible actions (it doesn't matter how irrational those actions might be) that would cause significant e...

16 answers  ·  posted 7y ago by user1878648‭  ·  last activity 6y ago by user1878648‭

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Q&A How to make glowing rain/mist?

So I've been playing Xenoblade Chronicles 2 and one of the effects that is used through the game (and the series really) is that ether (the game's version of mana) can often be seen floating in the...

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

Question weather light