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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3
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1answer
97 views

Water in the interior of a very large continent

Consider a world that is much larger than Earth, but has Earthlike conditions on the surface. (Including gravity = 1g, by some suitable unobtainium.) Clearly, the surface could be covered in a large ...
7
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1answer
96 views

How viable is my model of gapless neurons?

Recently, I have been writing about anatomically plausible superhumans ( a more advanced, stronger, and smarter human species that was artificially created and planted on a terraformed planet similar ...
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1answer
82 views

A planet with flying witches on broomsticks - or are they?

NOTE My question is different from this previous one. What could be the physics behind witches flying on broomsticks? It is different because the phenomena in my question are not actually witches - ...
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1answer
72 views

A war for what’s left of space [duplicate]

My story is a space adventure, opera, war with an advanced alien race going to war with each other using this magic system the warring factions are the remnants of a Kardashev type 3. The biggest ...
2
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1answer
49 views

Would this setting be realistic or feasible for this race?

I have a concept for a race that I'm very confident is sound in general, but I'm wondering if they would do well in the setting I currently have in mind. The race has a lizard-like appearance, largely ...
4
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2answers
170 views

If Thorne–Żytkow Objects Exist, How Far/Wide Would Their Habitable Zones Be?

First proposed in 1977 by physicist Kim Thorne and astronomer Anna Żytkow, a...you know what? Let's just call it a TZO, sounds easier that way. Anyway, a TZO is supposedly a giant or even a ...
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0answers
59 views

Creating Genetically Engineered Individuals

Let's say I want to make a genetically engineered being, who doesn't have iron-based blood, and is an improvement on humans across the board: strictly stronger, more resilient, greater lung capacity, ...
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2answers
71 views

Naturally occurring temperate meadows

On a largely uninhabited world with geology, climate, biome etc very similar to prehistoric Earth, I have some scenes taking place in a temperate grassland. It's at moderately high altitude, and I ...
3
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3answers
132 views

Without tides, would we have beaches?

Consider a world similar in most ways to Earth, except with no tides. (No moon, and for some reason outside the scope of this question, solar tides are negligible.) Would it have beaches as we know ...
5
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1answer
109 views

What substance would make a good lava ocean?

I'm starting work on some fictional star systems, and I want to create a planet that has lava oceans. I found an excel spreadsheet a while back that does calculations for stars and planets, and based ...
5
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3answers
156 views

What environments wouldn't be present on a recently terraformed planet?

What environments wouldn't be present on a recently terraformed planet? Just to be clear: this hypothetical planet had no magnetic field and didn't have materials present on the surface required to ...
38
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11answers
5k views

Most efficent way to transmit binary data by human voice

Suppose two people want to transmit some binary data (a png image perhaps) by voice. Two of my characters want to share binary data but they can only use their voice and no other form of communication ...
6
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2answers
376 views

How could a large bovine (think yaks or muskoxen) evolve to become bipedal?

Recently I've been picking back up my worldbuilding for a DND campaign I've been lightly working on for a few years. One of the ideas I have are bovine dwarves, mostly based off of yaks or muskoxen. ...
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1answer
52 views

Nocturnal or Diurnal?

I am currently creating a species similar to a squirrel. It lives in a rainforest-type environment and eats fruit. Its predator is a cat-like creature that ambushes it. The average temperature on the ...
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5answers
198 views

If you stop time, does your body losing heat burn everything to ashes? [closed]

If time is stopped but you still move it means that now your movements are happening at infinite speed. Even your breathing infinitely fast. And also your metabolism which means that you are ...
6
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2answers
166 views

How would huge chunks of floating land soaring the skies really fast affect my world?

My world is composed of a surface and three distinct layers of floating islands sorted by altitude, lets call them Lower, Mid and Upper for convenience. Lower and Upper are composed by medium sized ...
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0answers
37 views

Anatomically Correct Fiction Land Man-Eating plant [duplicate]

A submission to the Anatomically Correct series! Yes, a man-sized pitcher plant would (probably) be realistic, and yes that would sure be a man eating plant. But, this question is not asking about ...
5
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2answers
133 views

Horns for Cooling Off

I am currently creating a cat-like creature that lives in the trees. It is a diurnal ambush predator that's a little over a foot (30 cm) in height and two feet (60 cm) in length (not including tail). ...
6
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1answer
57 views

Evolution of ossicones like structures to tentacle or trunk like limbs

A time ago I made a similar question which is this and some time after other similar which is this. So I can consider this new question an improvement or continuation of what I wanted to achieve with ...
11
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12answers
6k views

How can I store energy/data reliably for 300 million years?

Following this question: How can I implement time travel on a somewhat realistic way? Considering I have a way of getting energy into the past (as said on the previous question), I need a way of ...
3
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3answers
184 views

Non-World-Busting Superman?

I have a superhero setting where one guy, when fully powered up, is a flying-brick type with energy blasts who I think of as being able to lift about 1000 tons (about 10 million Newtons), and this ...
3
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2answers
122 views

Mechanical Energy Absorption

I’m in the process of creating an organism on a planet that has the ability to absorb mechanical energy directed at it and convert it into heat with a very high efficiency rate of over 70% only to ...
17
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8answers
2k views

Making Suitable Clothing For Fire Mages

In my world, there are mages capable of wielding the power of flame. The trouble is, trainee pyromancers tend to burst into flame, whenever they get excited. And later on, truly gifted pyromancers ...
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0answers
47 views

Creating a superior species from a human template: what biological aspects could be improved upon without sacrificing the physical form? [closed]

Quick set-up: an AI creates a new species from the human template, intent on improving upon the inferior design across the board. Starting with the idea of looking at them like computer hardware and ...
3
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0answers
95 views

Anatomy of a sexual parasitic specie with small and intelligent females but large and “brute” males

I already made a similar question searching for possible features which can make this fictional specie biologically functional, so this question can be considered a second part of this. I would ...
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0answers
33 views

In this infant (<500 million years) solar system, how far would each orbit be to be stable?

Here's the story: There is a solar system that is still a baby, less than 500 million years old. There are a total of eight stars clumped into four binaries, each one with its own habitable zone. ...
11
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9answers
1k views

What kind of catastrophic phenomena could cause a solar system to be wiped out with little to no warning?

It's a pretty simple question: imagine you have a solar system about the same size as our current one. This solar system is close enough to nearby colonies that most observatories can see the planets ...
3
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1answer
41 views

Movement Features for Tree-Dwelling Prey Animal

I am currently creating a small creature about the size of a squirrel. It lives in the trees and eats fruit. It is the prey of a cat-like creature that has a prehensile tail and is agile and can run ...
6
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1answer
306 views

How much energy I would require for a railgun to shot a bullet in the same speed of normal rifles?

So, in this history, they just said "screw it, I'm giving railguns to the army", and they added a machine gun like rifle with big caliber, but low recoil, they carry a backpack with ...
3
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2answers
851 views

Bill Gates Is Thinking About Dimming the Sun - What's the worst that could happen? Real-life WorldBuilding

Bill Gates Is Thinking About Dimming the Sun The billionaire is backing a study of the controversial technology called solar geoengineering. Let us suppose that the research shows that cooling the ...
4
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3answers
650 views

How fast could a 3.2m tall, 380kg human run?

Over the past one and a half years, together with your friend, I am writing a book about anatomically plausible superpower (artificially created form of a person, in all superior modern people, both ...
3
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3answers
511 views

Feasibility of diet based on Fungi?

I envision a fictional future world where fungi become an effective means of recycling massive amounts of food waste (compost) with the help of genetically engineered variants. The genetically ...
4
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3answers
804 views

How fast and how would fjords erode?

I'm working on a world that hasn't had an ice age in 250 million years and looking at how to shape the coasts. I'm thinking about fjords (also glacial lakes) and trying to figure out if they would ...
3
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3answers
174 views

How fast could we build a Dyson Swarm?

I'm in a rush to colonize the Solar System. Thankfully, the latest Space Race, a commercial one between SpaceX, Blue Origin, Rocket Lab and other less known market entrants, is set to dramatically ...
5
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4answers
1k views

How close could a RADAR/radio telescope be constructed near a town?

I'm working on a story set in the early 2000's and an integral part of the story is a large telescope array in Nevada, that uses both passive radio observation and active RADAR transmissions to ...
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4answers
167 views

How reasonable is my “Chimera Virus”

I have in my series a group called "Chimeras". They were once normal humans but were exposed to an artificial gene-editing retrovirus known as the "chimera virus". The chimera ...
2
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2answers
173 views

How feasible would humans beings wiped out by plant aliens be?

In my world, the population of mankind has been all but wiped out by the accidental introduction of extraterrestrial plants brought to earth by scientists who were attacked by them. The plants ...
4
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4answers
369 views

Cryo-Pods For Unaltered Humans

OK, faster than light isn't possible & a merely significant fraction of it can begin to stretch the bounds of reasonable reality as that fraction increases // so a less unreal way to allow us our ...
3
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5answers
104 views

Could a planet form from the remnants of a star and its solar system?

This is just a simple question, and I haven't thought all that well on it, but I think in terms of sci-fi and fantasy less tied to probable scenarios this could be quite possible. Imagine a free-...
5
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4answers
250 views

Densest breathable atmosphere composition for a human being without breathing equipment

Setting on Earth, sometime in the near future (50/100 years). A large sealed pressurized environment is set up in an even larger industrial complex. Workers get in and out of the environment for their ...
7
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6answers
434 views

How would this astronaut-in-training know she was in a pool on the Moon and not on the Earth?

Many are familiar with the scenes of astronauts-in-training practicing weightless activities while submerged in a pool with neutral buoyancy. In this scenario, an astronaut is in such a pool, ...
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1answer
166 views

Can a planet hypothetically have two atmospheres with an ocean in between?

I want my hypothetical planet to have a sort of ocean to filter out radiation, but density is problematic. There would have to be an outer atmosphere, and then some form of ocean-like liquid that is ...
2
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2answers
688 views

What effect would water that is twice as dense, while still liquid, have if a human were to try and swim in it?

In my world there are two bodies of water. One acts as a radiation shield and is part of the atmosphere, so it needs some (undecided) force to keep it in place. The other is ideally twice as dense as ...
0
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0answers
57 views

World with Demons, Merfolk, Angels, and Humans living together

I am writing a prospective scenario for a satirical horror-comedy and science-fantasy Web-series for adolescents (or teenagers if you want) and adults where humans cohabit with demons, merfolk, and ...
0
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1answer
70 views

What will Earth's orbit around the sun look like if it were standing at an axial tilt of 66.5 degrees? [closed]

Earth currently stands at an axial tilt of 23.5 degrees, low enough for seasons to form. Here is the diagram below: In the spring and autumn months, Earth parallel to the sun. In the summer, it ...
3
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1answer
65 views

Climate model for an S-type binary

I have recently created a planet and I've decided it will exist in a binary system. It will orbit a red dwarf which will, in turn, orbit a red giant that has evolved from a very low mass star (so it ...
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2answers
52 views

How much energy an active structure would need to be a vacuum balloon?

In this question here there is an answer telling that it would be possible to make a vacuum balloon using superconductors, however, we are nowhere close to a room-temperature superconductor. Assuming ...
12
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8answers
2k views

How could I justify that ancient humans ruins have not been discovered?

Scenario: Earth's history is 100% equal to reality . It’s the year 2040. First interplanetary cities with 3% total population of mankind. 200 million years ago humans appeared on Venus, developing ...
1
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1answer
88 views

It is possible to slow down time without a Black Hole? [closed]

Well, I saw a interesting question in other sites and it made me wondering. Since cryogenics and hibernation aren't exactly that easy, and colony ships that travel through the eons in space carrying ...
4
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3answers
154 views

Is this space fighter rapid deployment system feasible?

Had this idea for a rapid space fighter deployment system and wanted to see if anybody sees a flaw I'm not. Imagine a big circle in space, and inside that circle are 'stacks' of space fighters facing ...

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