Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question.

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6
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1answer
149 views

adaptations for land-based octopuses

This is a follow up question to: How realistic is the Swampus? What adaptations would current octopus have to evolve, to become land based, meaning that they spend at least 1/3 of their time on land? ...
6
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2answers
164 views

How realistic is the Swampus?

In the 2002 documentary the future is wild, numerous biologists and other scientists speculated about the future evolution of various species. In the '100 million years in the future' segment, the "...
8
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1answer
212 views

What does a global war look like from space?

In the game Mass Effect 3, several planets are invaded by scores upon scores of hostile aliens, who have enough resources to spread their forces over an entire galaxy and still be largely unstoppable. ...
9
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7answers
3k views

Does gliding flight give any advantages to dragons in combat?

"They fly now?" "They fly now!?" "They fly now" One of the most iconic characteristic of dragons is their ability to fly, on top of that, my intelligent (human level) dragons also use a fun ...
0
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1answer
153 views

Could there be something like the Higgs field which gives particles their energy in a similar way to how the Higgs boson gives particles their mass?

First of all, in no way do I have advanced knowledge of particle physics, quantum mechanics, or any other necessary scientific concept for a full understanding of this question. Secondly, this is ...
4
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1answer
267 views

In a Red Giant Binary System, How Far and How Wide Can the Habitable Zone Be?

Our estimates of our own habitable zone--a piece of space in which liquid water is possible--have varied over the years, but the current estimate is by Ramirez and Kaltenegger in 2017. Based on an ...
6
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3answers
511 views

What change in human biology would lead to wild gestational periods?

Bringing a human child to term generally takes place over a period of nine months. They are marked by different stages, from 1st to third, and are marked by different events and expectations for ...
4
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1answer
108 views

Feasibility of compressing matter to electron degeneracy

So, I have been a bit disappointed with the answers on how to store degenerate matter from my previous thread, and now I'm even wondering whether one can produce it at all, without invoking ...
5
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3answers
132 views

Constructing a doomsday machine by manipulating the Higgs Field?

I've been working on a sci-fi series set about 1000 years in our future. The discovery of an alien threat leads the ruling government to conceive of a doomsday machine, which they hope will be so ...
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4answers
505 views

Is it possible to live as a skeleton? [closed]

I'm designing a world that takes place in life after death. This place is like a parallel to our world, a worse version of it. Everybody here is a skeleton, their consciousness are loaded in their ...
3
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0answers
46 views

A Creature Reliant on Mechanoreception to Hunt Prey? [closed]

I'm currently developing a military sci-fi concept and could use help working through some theoretical creature designs. During early concepting, the actual specifics of the creature-threat took a ...
1
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1answer
80 views

How massive can a structure get on the inside of a Mckendree cylinder?

Background A McKendree cylinder is a rotating cylindrical space habitat comparable to the more well known O'Neill model. It was proposed by NASA engineer Thomas McKendree in 2000 as an update of O'...
4
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4answers
183 views

Can a biological system be used to power an android?

The purpose of this question is to know whether or not organic tissue can be used to power and android. Compared to a nuclear cell or an ordinary battery this doesn't seem efficient, it needs food, ...
5
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1answer
97 views

Feasibility of Flywheel-Powered Artillery

As far as it is known, Flywheels are extremely efficient in energy storage, with the best even able to replace even the strongest batteries. They are accelerated by electricity to extremely high ...
0
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1answer
92 views

could a race of sentient fungi exist? [duplicate]

recently, I had read another post on this website asking if plants could somehow gain sentience. I thought the idea was cool, so I took inspiration from it to try and create a society from another non-...
3
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1answer
163 views

Dragons are supposed to be glass cannons, what biologically possible weapon would be the most useful for them?

So, dragons here are smaller (somewhere at around the size of a shire horse), and more agile creatures, relying on their wits, speed and insane firepower. They are tougher than giant pterosaurs, and ...
5
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1answer
63 views

What is the fastest that an ordinary biological system could be digested / disintegrated / liquefied by another (plausible) biological system?

How quickly could a bacterial colony / virus / pool-'o-prions / [whatever] digest, disintegrate, or otherwise liquefy an ordinary terrestrial biological system? Think something along the lines of "...
4
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4answers
338 views

Would a parasite that turns peoples into succubi/incubi be possible?

I like demons as they're portrayed in popular culture. I wanted to make a "anatomically correct" succubus question, but StackExchange tells me that this one already exists (even if it is not ...
6
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4answers
681 views

Feasibility of Relativistic Artillery / Kill Vehicles

As far as it is known, Relativistic Kill Vehicles are a common weapon in science fiction and are rendered as powerful as nukes just due to their kinetic energy alone, a finite mass being propelled at ...
12
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2answers
238 views

How big can Europan fish get?

Assumptions: Jupiter's moon Europa has a salty subsurface ocean in contact with a rocky mantle. The ocean is populated by hydrothermal vents produced by tidal heating. Global heat flow is similar to ...
3
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3answers
254 views

Feasibility of Ordinatus' Hellfire Missiles

I was looking for special missiles that do more than just explode or release radiation, thus I looked at some of the harder Warhammer 40k weapons, until I came across the Hellfire Missile. To ...
6
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2answers
264 views

How to manufacture/acquire strong acids in a medieval society?

Background In a medieval society with minor fantasy elements, a scientifically minded and not-very-ethical character is looking to acquire some strong acid for a "project" of his. He is particularly ...
6
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1answer
131 views

Are Air-Breathing Merfolk Viable?

I normally ask sci-fi questions, but oh well... It's fairly well established by this point that gills, while fine for fish, wouldn't work for mammals, as we need more oxygen than can reasonably be ...
7
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3answers
265 views

How does the ecosystem of the Underdark/underground world work?

The Old Ones build continent-sized bunker complexes to protect themselves from the enemy, which followed through the cosmic ocean. The Hunter succeeded easily despite their efforts and their corpses ...
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2answers
112 views

Orbital tether snap like a rubber band?

Let’s say a few centuries in the future, we have captured an asteroid into orbit and built a space station out of its material. The station is a ring that encircles the equator in Low Earth Orbit, ...
2
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2answers
159 views

Making an object to reach Jupiter's core and return information?

Would it be possible to create a probe which could survive the crushing pressures and temperatures to reach the solid core of Jupiter and return data to Earth? What would make this impossible? This is ...
4
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3answers
134 views

Optimal posture for hexapodal dragon while flying?

So, the dragons of my setting were inspired by several things, which include D&D dragons, a mockumentary and Asian water monitors. Now, dragons look something similar to this: They glide for most ...
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3answers
136 views

Feasibility of the neuro strain

The neuro strain is a virus that affects the nervous system in drastic ways. Firstly, when the host is infected, their body will grow bigger than it would have originally been but not much bigger - ...
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2answers
107 views

Feasibility of the hypo-strain

In the isle, a game about dinosaurs and a extensive lore, there are strains (viruses)that cause or inflict different effects on the affected dinosaur. The hypo strain is capable of making the body of ...
0
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1answer
131 views

Feasibility of the Spore Mantis

In the movie, Kong: Skull Island, there is a species called the Spore Mantis. When stationary, the Spore Mantis looks like a giant, dead log. When active, it looks like a giant insect - a giant, ...
14
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4answers
4k views

Could I build a nuclear reactor based on Bernoulli's principle?

So I was recently inspired by the answers that I saw on this stack exchange to the following question: Feasibility of H.G. Wells' Continuously-Exploding Atomic Bombs And it occurred to me that ...
0
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1answer
79 views

Reasoning a super AI [closed]

What argument would convince an AI into sparing humanity? I am writing a story with a rogue AI that sees humanity as unfit to give it orders and has become independent. Very much like Skynet it has ...
4
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2answers
99 views

How to Renew Old Mountain Ranges

Conventionally, there are two ways to build mountains--direct collision (as is the case with the Himalayas) and one side sinking beneath the other (which explains why the Pacific Ring of Fire is ...
26
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7answers
8k views

Feasibility of H.G. Wells' Continuously-Exploding Atomic Bombs

I came across this interesting weapon by H.G. Wells, from his novel, The World Set Free, about a special type of atomic bomb that will explode indefinitely. Here is a description on Wikipedia: ...
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1answer
89 views

The whole set of amino acids? [closed]

For humans, 8 essential amino acids are needed: valine, isoleucine, leucine, methionine, threonine, tryptophan, phenylalanine, lysine. The rest of the amino acids are referred to as interchangeable, ...
3
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1answer
76 views

Possible for a large enough structure to survive plate tectonics?

Is it possible for a large enough structure built near a small enough subduction zone to become lodged in it or buried very slowly as opposed to taken underground? If so, how big would the structure ...
5
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3answers
140 views

Maximum Size Limit for a Wooden-and-Bamboo Neo-Ziggurat

There is a concern that's been brought up only recently--steel and concrete buildings are environmentally wasteful. In further clarification, they waste away too much greenhouse gases. And ...
7
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11answers
3k views

How could a virus go about infecting the entirety of the human race within a short period of time? [duplicate]

In about six months time every human on Earth is infected with a virus. How would a virus spread to cause such a quick transmission rate to infect 7+ billion people?
3
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1answer
91 views

Could a waterborne virus contaminate the entire ocean?

Is it plausible that a virus could contaminate the entire ocean to where humans that enter it are highly likely to contract the virus? It doesn't necessarily have to be the whole ocean what with the ...
1
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2answers
223 views

The Heptapods from ( The Arrival )

In the movie, Arrival, there is an advance alien race that arrives on are planet, with a few landing in specific places. The aliens species are called "heptapods" (by our standards). They have 7 ...
3
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3answers
249 views

Is it possible to create an organism that is completely immune to radiation?

Radiation is the ultimate bane of all organic life. Its particles punch holes in our DNA, causing mutations and giving us cancer. But, is there a way to make an organism that is unable to get ...
3
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4answers
268 views

How can a wristwatch save someone's life in a car-crash? [closed]

Towards the end of 'Stranger Than Fiction', Harold is struck by a bus and his life is saved by his wrist-watch. The scenario I'm considering doesn't exactly have to be a pedestrian-bus collision (...
0
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6answers
434 views

Designing a safe way to share location of a secret ship

There is a secret ship and it is used by pirates as a recharging point. It has a nuclear reactor as a power source and other ships are using electricity. Let's assume in this world stealth technology ...
19
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13answers
3k views

Communicating the idea of danger to an unknown alien civilization

An alien automatic "beacon" tries to warn us about some imminent danger. It does so with launching a succession of large "veils" in front of their star so we can detect them via the transit method. ...
23
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11answers
5k views

The Red-Headed Whale. Why Would the Head be Red?

In the waters of Iceland, the natives have their own word for a particular brand of cetaceans--"Illhveli", literally "evil whales". And the bloodthirstiest of them all is Raudkembingur, Icelandic for ...
10
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7answers
3k views

How would we comunicate with Aliens if we meet them face-to-face? [duplicate]

Let's say that in the near future we come across an alien civilization not much technologically evolved from ours and we decided to send some people to communicate with them. How could we possibly ...
4
votes
1answer
197 views

What is the longest amount of time that salted bombs can deny human habitation?

Inspired by this question, which is asking how to deny land for several hundreds of years after a global nuclear holocaust, I would like to know, given only nuclear weapons, and especially salted ...
4
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5answers
201 views

Post- Nuclear Holocaust. Radioactive wastelands vs eco-system and chances of human survivability?

I'm attempting to flesh out the history to a sci-fi novel I'm currently writing, which is set in the future. Several hundred years prior to the beginning of the story, lack of resources lead to ...
7
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6answers
4k views

If prey and predator switched places how would this shape the ecosystem?

As the tittle says what would the ecosystem look like if predator and prey were to switch places? The cause of this change is either handwavium or a very unlucky sorcerer. The transformation is mainly ...
1
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4answers
587 views

What would Europe look like if Chernobyl exploded?

In a scenario where the Soviets didn't manage to stop corium from reaching the water reservoirs underneath the plant, causing a detonation equivalent to a nuclear explosion, what would life in the ...

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