Postlim Fort
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Best star for a Dyson sphere?
11 votes

your home star For the first Dyson sphere of a species you will always find it around its home star. The star it has evolved around. It dous not need to be complete. But significant buildup of the ...

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What weest sole change would have actualized High Speed Rail in Canada?
Accepted answer
2 votes

you can count the US as the second country without high speed rail. even though there is some of it. it is whoefully inadequate. a bunch of things are contributing to this lack of high speed rail in ...

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How much biological overlap would there be between a mirror life ecosystem and an Earthly ecosystem?
2 votes

there are 3(4) macro nutrients protein, sugar, fat (, and fibers). proteines of the wrong chirality are useless to harmfull. sugars would be just useless. but the fat can be shared. there is one ...

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Would earth life be able to synthesize the chemicals or materials needed to produce endothermic reactions?
1 votes

The reaction between hydrochloric acid (HCl, or stomach acid) and baking soda (NaHCO3, a dry powder) is endothermic. If a creature like a bombardier beetle can excrete the two substances at once then. ...

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Is an Underwater œcumenopolis viable?
2 votes

is it possible? yes. but is there no other planet available? with our current technology we would rather build on a barren rock than build on the seafloor. the idea of a œcumenopolis it that is a hub ...

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Could the differences between day and night on this desert planet allow for strictly nocturnal condensation?
0 votes

One can't do any actual calculations without knowing the amount of light energy hitting the planet. You should be able to get that number from the average temperature you want your planet to have. ...

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A chemical process that creates sapphire bones
4 votes

To quote Wikipedia: The Verneuil process allows the production of flawless single-crystal sapphire and ruby gems of much larger size than normally found in nature. It is also possible to grow gem-...

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What is the purpose of using tractor beam when there is a teleporting device onboard?
7 votes

movement your teleporter needs some time to calculate each teleportation. by the time it is finished doing the calculations both ships would have moved in some unforeseen direction. so if it were to ...

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What would body armour designed for women look like?
5 votes

it won't look any different. men and woman have the same vital organs. of the shelf armour would just be non gendered. or the same and just marketed differently. fitted armour would just be that. ...

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Weighted Clothes In A Low Gravity Environment
0 votes

when only talking about low-gravity environments. some aspects like muscle deterioration and bone density loss should be slowed down or stopped with heavier clothes in a low-gravity environment. ...

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What would be an effective solution for quick dissipation of heat in a handheld device?​
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1 votes

Also, is there maybe a way of forcing the heat away into a direction even if against the thermal gradient, as to force the cold part of the generators cool quicker? definitely not. there are no other ...

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How large could an introvert be?
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1 votes

The largest turtle like creature I can think of is the Carbonemys. It must have had a neck of about 1 meter long and 20 to 30 cm thick. It probably represents the largest introvert in a tortoise like ...

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What would this character potentially be charged with in this situation?
0 votes

I am no lawyer. in any case this would probably be a civil case. not a criminal case. local authorities find out first and are the ones to make the charges. first of all the the authorities are not ...

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Would a species of giant ape be able to live in an taiga?
2 votes

An island the size of Italy may be a little small for these large apes. They remind me of the neanderthal humanoids. And those thrived in northern latitudes during the last ice age. In fact gigantism ...

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How long and heavy can a tentacle tail get relative to the animal it's on?
Accepted answer
2 votes

If you want an animal with legs then 1/3 the total mass. At 1/3 of the total mass one such tail can still be articulated by the animal to do things. If it is between 1/3 and 1/2 the weight then it ...

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With contemporary technology, is it possible to produce a propellant for bullets that is stored as a liquid but that solidifies upon exposure to air?
4 votes

A heating element can used in the magazine to keep it just above melting point. Then it would cool solid in the barrel. This can and probably will be a slow-ish process. Problems may arise if the ...

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Is it possible to achieve space flight without having discovered crude oil?
1 votes

yes, definitely possible. chemically speaking all rocket propellants can be made synthetically form various sources on the surface of the earth. oil or any other fossil fuel is just the easiest source ...

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Hard Sci-Fi hardlight-based "energy shield"
0 votes

Energy shields are not feasible with our current understanding. If you want protection against lasers then I'd suggest a dust cloud of charged particles suspended by a magnetic field. And protection ...

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are my rivers and map little realistic
3 votes

I made this crude picture to help you on your way. The basic idea is that all rivers flow from mountains/hills to the ocean. On their way to the ocean they often join but never split. If a river runs ...

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Science and Physics of Portals
2 votes

portal physics are wonky anyway. think air pressure, rotational speed of the planet, gravitational potential. so it will be up to you to decide the answer. I would imagine that the weight of the ...

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If we built spaceships on the Moon, would we have more fuel to burn for trip to Mars
3 votes

Fuel: I read somewhere that this would take an astronomical amount, which is why, as of how much bang for the buck we currently get, the best thing to do is accelerate of to some sort of cruising ...

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If the world was flat, what would happen if someone walked off?
3 votes

a planet sized flat disk in the real world would not exist. but if it were then you would only find that only the center of either side to feel flat. walking from the center to the edge would seam ...

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Why Would Naturally Evolved Monsters Have Weak Points?
1 votes

All your monsters have both weak spots and more defended places. Humans hunting them have only taken note of those that proved beneficial to hit. For the smaller ones you can just hit them wherever. ...

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Distribution of magic wielders
5 votes

I have made my wizards 1 in 10000. This gets me about 1 in every major city and a bunch in the wizard school. But to have magic be part of the lives of everyday people. I have made 1 in 100 people be ...

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Why do my humongous cliff ledges have cultivable soil on them?
2 votes

Wind could work to deposit fine material onto the floor of crevices. When biological material mixed with this fine rock you get some fertile soil. And water can't wash it away because the soil is in a ...

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How well would a transplanted human civilization keep its technology and culture?
1 votes

firstly you would need a minimum viable population. https://www.britannica.com/science/minimum-viable-population. If you have too few people then you will get too many problems with genetic diseases. ...

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Walking to space
0 votes

No it is not possible. The way I'm imagining it is some very very deep cavern that holds all of the planet atmosphere (doesn't have to be more then a single room sized area at the bottom of it that's ...

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Maximal performance animal, cannon glass animal
0 votes

In evolution, everything is "trying" to be as optimized as possible. So much so that you usually can figure out the traits of a predator from the traits of the prey and vice versa. I want ...

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Arrest global warming trend via any means (E without S or G)
2 votes

The global climate change is an energy problem not so much an CO2 problem. My personal favourite choice is to build a factory on the moon that produces solar panels. Install those panels at Lagrange ...

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How big of a problem would UV radiation be for colonists around a main sequence blue star?
2 votes

M. A. Golding wrote a great answer but like me probably thought that it was supposed to be a binary system. Regardless of your choice between the 2 to 4 solar mass stars. Your brain will just ...

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