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13.1k posts
 
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Q&A Can space debris be used as a heat sink for re-entry?

In the world I'm building, a nuclear war and subsequent repressive chaos have led all satellites to be destroyed by the powers that be, around 10 years from now. A few years later, a small spacecra...

3 answers  ·  posted 6y ago by Ale Fernandez‭  ·  last activity 5y ago by Ale Fernandez‭

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Q&A Could this programmable matter approach allow for scientifically plausible shapeshifting?

While I am aware that there have been a lot of posts about how shape-shifting could be possible, but I am asking if this type shape-shifting would work. Okay so fair warning, physics isn't my stro...

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

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Q&A What would the seasons be on a planet with a 10 degree tilt?

What would the effects be on mountains, deserts, and grasslands? I know about the effects of a planet with no tilt, but I was curious about a 10 degree tilt. I am thinking the seasons would still b...

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

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Q&A Viable Social Groups for species with three sexes

Stable Social Structures for Species with Three sexes As a continuation of this question, I'm curious about the viability of long-term social groups with the following characteristics: There are ...

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

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Q&A A ravine ~15 miles (~ 24 km) deep on average opens up in the Himalayas. Do we survive?

A ravine the size of the Mediterranean in area and ~15 miles (~ 24 km) deep on average opens up over the course of a few days in the Himalayas. A size comparison of the Mediterranean Sea to the U...

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

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Q&A Human Hive Mind Alterations

Context I got this man who can control millions of insects at a time to fight. He accomplishes this thanks to the microbots(smaller than bacteria) in his nervous system that react to his mind and ...

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

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Q&A Would biological hydraulics be worth evolving in tetrapods?

I am working on an extraterrestrial class of tetrapod-like organisms. To give them an evolutionary advantage, I am considering biological hydraulics to supplement the muscles in the hind legs. Ev...

3 answers  ·  posted 6y ago by Roki‭  ·  last activity 5y ago by Roki‭

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Q&A How could a shapeshifting species look zoomorphic and human at the same time?

For my a story I'm writing, I have 3 species that are from the same evolution line; Kitsune's, Tanuki's, and Bakeneko/Nekomatas. All three are familiar in the lines of shapeshifiting animals. Thei...

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

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Q&A Keplerian Life Cycle: Old age

Life Cycle Their life cycle is complicated but in the simplest way I can put it, a Keplerian is considered a baby for the first 2 years of its life. Then it is considered a gender neutral child (I...

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

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Q&A Is there anything wrong with my plate tectonics map?

Here is a map I just produced of the plate tectonics of a world I'm working on. Does anyone familiar with the subject see anything wrong with it? If you can differentiate between the penciled and...

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

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Q&A How much does a moon's gravity effect the "free-fall acceleration" of an object on the planets surface?

The Planet The Planet I'm speaking of has the same size as earth but is much lighter. That's because the "Upper Mantle" is about 1000 km wider and mostly consist out of organic material. Such a hu...

6 answers  ·  posted 6y ago by user49252424344‭  ·  last activity 6y ago by user49252424344‭

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Q&A How can paleolithic humans colonise the stars without direct help from aliens and still be primitive?

In my story I have paleolithic era humans who were contacted by aliens long enough ago for them to have used space travel to spread across many planets. I want them to be able to fly and somewhat m...

27 answers  ·  posted 6y ago by PStag‭  ·  last activity 5y ago by PStag‭

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Q&A Wormhole travel system: how would they connect the systems?

Here, star systems are connected with "wormholes". The wormholes facilitate travel at $250\ c$, regardless of mass. They are made using special ships. Any travel (including military vessels) not th...

2 answers  ·  posted 6y ago by user_194421‭  ·  last activity 6y ago by user_194421‭

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Q&A How can a colony of teleporters make the most money while keeping their teleportation a secret?

The Situation A colony of 100 teleporters (between the ages of 20-40) have been hidden away living like monks for 1000's of years to prevent their detection. With the death of their old leader, a...

39 answers  ·  posted 6y ago by scohe001‭  ·  last activity 6y ago by scohe001‭

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Q&A Mistaken For Wings?

What feature could more feasible evolve in a humanoid race, related to humans or not, that could be mistaken at first glance and/or conflated into by word of mouth exaggerating things, wings?

8 answers  ·  posted 6y ago by The Literary Lord‭  ·  last activity 6y ago by The Literary Lord‭

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Q&A Creating a scientifically semi-valid super-soldier, part 6: Radiation protection

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 semi-...

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

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Q&A Dangerous pending task in world managing A.I

I've had this idea for a short novel, at the intersection of the One thousand and one nights and the Multivac (& co) short stories from Asimov. The idea is that there's some kind of super AI t...

39 answers  ·  posted 6y ago by Echox‭  ·  last activity 6y ago by Echox‭

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Q&A In what era or tech level in earth's history did people have the ability to cross a super-earth's ocean 50,000 km wide?

I have a huge planet with two continents separated by a wide ocean. Inhabitants think that their continent is the whole world because the other side is too far and they never visited it. What if pe...

16 answers  ·  posted 6y ago by brendt‭  ·  last activity 6y ago by brendt‭

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Q&A Can Off-shore Calderas Exist?

A caldera is usually the remnant of a volcanic eruption powerful enough to collapse the structure surrounding the magma chamber. Many of our examples, like Yellowstone, Crater Lake, Toba and even ...

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

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Q&A Could a predatory semi-sentient species survive, in the long run, without the emotion of fear?

I was thinking of an idea for an alien species in a hard sci-fi universe, and I wondered if a species, with the same amount of emotions as bottlenose dolphins (Except for fear), survive as a specie...

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

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Q&A How can as many probes as possible be sent to nearby stars?

In the near future, say about 50 years, the most powerful governments are starting to compete for control of interstellar resources. The first step is to send a probe or probes to a neighbouring st...

6 answers  ·  posted 6y ago by CJ Dennis‭  ·  last activity 6y ago by CJ Dennis‭

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Q&A Bonobo-LIke Social Structure

Bonobos tend to solve disagreements through sex instead of violence, what might have caused this to evolve, or something similar to evolve in a sapient race of humanoids?

5 answers  ·  posted 6y ago by Hlord369‭  ·  last activity 6y ago by Hlord369‭

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Q&A What would be the ideal terrain for promoting the evolution of blade feet that sink into the ground?

So, in my last question, I asked "How could an animal run fast using blade-like feet that sink into spongy ground?" The premise was that on my planet, forests grow not from soil but from spongy, ...

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

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Q&A Would an invasive spinal cord brain computer interface allow healthy individuals communicate with computers faster than typing?

Suppose that our understanding of biology and bio electronic interface technology reaches a point that it is possible to make a spinal cord implant that: forwards spinal cord signals exactly as t...

3 answers  ·  posted 6y ago by Ciro Santilli &#x65B0;&#x7586;&#x6539;&#x9020;&#x4E2D;&#x5FC3;&#x6CD5;&#x8F6E;&#x529F;&#x516D;&#x56DB;&#x4E8B;&#x4EF6;‭  ·  last activity 6y ago by Ciro Santilli &#x65B0;&#x7586;&#x6539;&#x9020;&#x4E2D;&#x5FC3;&#x6CD5;&#x8F6E;&#x529F;&#x516D;&#x56DB;&#x4E8B;&#x4EF6;‭

Question biology
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Q&A How could an animal run fast using blade-like feet that sink into spongy ground?

In my fictional planet, forests grow not on soil, but on vast spongy mats of fungi. Traditional Earth-like feet would struggle to get grip on the squishy ground, so most megafauna taxa have feet li...

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