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13.1k posts
 
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Q&A Dozens of Habitable Worlds in One System?

I want to know if this is physically possible. So at first I thought I was nuts. Then I started reading about Hill Radii, and googled left and right. Turns out a Hill Sphere is the region around an...

2 answers  ·  posted 6y ago by Serban Tanasa‭  ·  last activity 6y ago by Serban Tanasa‭

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Q&A What Other Types of Broadleaves Would Grow in Subarctic Conditions?

As it turns out, conifers are not the only trees to grow in boreal forests, or taiga. At the southernmost ends, the evergreens are mixed with such deciduous trees as: Birch Alder Willow Poplar M...

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

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Q&A What are the minimum dimensions for planetary rings to be as visible as the moon in our night sky?

What are the minimum dimensions (length, width, height, etc.) for rings to at least be as significant (as in brightness/visibility) in the night sky as our moon? Since there are so many variables ...

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

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Q&A Designing a creature with jaws to crush iron bones

In my most recent question, I asked for a material other than calcium and collagen that could form skeletons in alien creatures. My favourite answer was bio-steel; "Iron with a small percentage of ...

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

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Q&A Skin of Large, Terrestrial Amphibians

I have some large, megafauna level amphibians inhabiting a temperate rainforest with naturally high levels of humidity. Would my large amphibians have any problems maintaining a classic amphibian t...

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

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Q&A Terrestrial ectotherms outside the habitable zone

Premise We have found extremophiles of the aquatic and microscopic types here on Earth, but so far large terrestrial extremophiles are the stuff of conjecture only. This makes it somewhat challeng...

3 answers  ·  posted 6y ago by Arash Howaida‭  ·  last activity 6y ago by Arash Howaida‭

Question environment planets
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Q&A Habitation of early Earth

Based on various methods of geological dating, particularly radiometric analysis, Earth is estimated to be around 4.5 billions years old. This is around the time the Earth's Moon was thought to be...

2 answers  ·  posted 6y ago by IlludiumPu36‭  ·  last activity 6y ago by IlludiumPu36‭

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Q&A Can the information of a nervous system be transported efficiently over a creatures bloodstream?

I came up with a pretty creative idea: An alien life form having an organ near to the brain that translates information out of the blood stream into feelings. My questions: The medium of communi...

4 answers  ·  posted 6y ago by question1‭  ·  last activity 6y ago by question1‭

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Q&A Liquid nitrogen blood?

Would it be possible for an alien species to have liquid nitrogen for its blood? What would be required for that to work? What kind of environment would it need to exist in?

10 answers  ·  posted 6y ago by EJdare‭  ·  last activity 4y ago by EJdare‭

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Q&A Would it be possible for a non-aquatic species to exhibit bioelectrogenesis?

This is my first post on these forums, sorry if I've accidentally overlooked any rules or etiquette. Please let me know if more detail is necessary or would be helpful. This question is about a spe...

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

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Q&A Is it possible for any creature to stay on an altostratus cloud without falling down? what are its limits?

I am working on a story. i want to know if is it possible for creatures like snake, eagle, vulture to stay on an altostratus cloud without falling down. if possible the limits on how much force and...

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

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Q&A Would a moon shatter if it collided with an unmovable barrier?

For story purposes, I'm trying to determine what would happen if a small moon-sized object crashed into an unmovable barrier surrounding a planet. My goal here is to eventually get a ring surroundi...

4 answers  ·  posted 6y ago by Thomas Myron‭  ·  last activity 6y ago by Thomas Myron‭

Question moons physics
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Q&A Largest Flower Size Possible

On an Earth analog, assuming all the selective pressures necessary are there, how large can a flower's bloom evolve to be? I'm referring the the vegetative part of the flower, the petals! I have no...

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

Question evolution flora
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Q&A Explanation to period in a sterile society

The world I'm building relies on the fact that the whole population is sterile, and all babies are conceived in vitro. They do not have bellybuttons anymore but they still have genitals, and do not...

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

Question biology humans
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Q&A Human Evolution if Dinosaurs never died off

Assuming there were no extinction level threats to the dinosaurs, and they never fully died off (and survived the following ice ages), how would this affect the evolution and technology use of huma...

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

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Q&A What would be the most efficient way to destroy a comet?

A large comet is quickly approaching my fantasy world. Its impact will spell doom for all life on the planet. Fortunately, there are mages on this fantasy planet who possess a magic capable of shat...

7 answers  ·  posted 6y ago by Thomas Myron‭  ·  last activity 6y ago by Thomas Myron‭

Question
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Q&A The Rocky Side of the World Without Oil

Lately, there has been speculation of what would happen if all the untapped oil, by the handwaving powers of the gods of television and money, disappear overnight. It has been explained, in varyin...

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

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Q&A Creature Design: Wind world ectotherm

Premise By definition, an ectotherm uses environmental heat sources to regulate its own body temperature. The most common forms of body heat regulation that we observe from ectotherms here on Eart...

3 answers  ·  posted 6y ago by Arash Howaida‭  ·  last activity 6y ago by Arash Howaida‭

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Q&A How to make it rain men properly?

In a certain world there is a ruler who runs a very powerful country with an iron fist. A faction of oppositionists has been giving her lip and has made some mean comments implying she brings the c...

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

Question weather
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Q&A Anatomically Correct Carnivorous Blankets

There is a website called the SCP Foundation which features a variety of creatures, objects and phenomena that border on the horrifying to the just plain weird. This one straddles the boundary betw...

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

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Q&A Realistic Shapeshifter Attempt

Imagine a sessile, multi-cellular slime like organism (or whatever necessary) awaits in a burrow or along a tree branch. Then an animal lands in its ooze and is trapped and soon paralyzed by its ve...

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

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Q&A Semi-Aquatic Ants

Is it plausible for a species of ant that inhabits a mangrove-like marine environment to have their abdomen evolve into a tail-like appendage for swimming to move from tree to tree to forage?

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

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Q&A Would Gravero! experience a massive heat blast after crushing an enemy into a diamond?

My new superhuman, Gravero!, has just entered combat. He's a new superhero with a lot going for him! He's resplendant in his dashing tights, his cape flows in exactly the right direction when he ...

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

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Q&A Octopus ink contains micro parasites that act as acid

I'm building a story around a newly discovered kind of deep-ocean octopuses whose ink contain "parasites" which act as acid in organisms. These ink parasites can be used as a weapon of mass destru...

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

Question sea sea-creatures
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Q&A Is it possible to create an eternal ring of storm encircling a large portion of the earth?

I'm trying to investigate the theory behind this phenomena. I have found answers to creating eternal storms but nothing specific to my world building. I'm looking at a future earth where any known ...

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