General Q&A about worldbuilding and other speculative developments that can be extrapolated from science.
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Background: So this Kurzgesagt video talks about quark stars, and how two of them colliding could send strangelets flying towards Earth or the Sun. Now it's been said that since, theoretically (as...
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 p...
The title sums it up pretty well - I'm basically trying to envision the ultimate predator of much larger prey. A couple of requirements: The predator must weigh 44 kilograms or more (Megafauna) ...
As you can probably guess from the title, I have some questions about the Hertzsprung-Russell diagram, especially how to use it to make plausible stars. Some questions: Can stars exist in the bl...
My friends and I are building a world with a 50 mile high volcano on it. The mountain is the result of some bored god deciding to play a joke on everyone. Or, some other god got angry and decided ...
Take the Earth-Moon system as we know it. Now, something causes a large rock to be lobbed in the direction of our moon. Exactly how that happens is deliberately left unspecified; it could be everyt...
Given the existence of neon kittens with: the internal properties and mentality of normal kittens bioluminescent fur. What evolutionary process outside of intentional human breeding/gene manip...
I was thinking of a parallel universe in which the Planck constant has an exact value of zero. How would this effect the physics of that universe and how would it effect the development of that un...
I have a planet orbiting one star in a binary system. When the planet is exactly between the two stars it will experience a double day; when the primary sun sets the secondary one rises, no overla...
This question builds off Information Exchange In Space and How would interstellar internet work?, and specifically uses the communication system I developed here because of this. In a summary of t...
Dragons are a grand classic of fantasy. For this question, let's assume we're talking about the following stereotype: hatches from an ostrich-sized egg and can grow to mountain size if nothing l...
In many science fictions we see planets which are designated by a particular terrain type. For example, Dagobah is a swamp planet, Tatooine is a desert planet, and Kamino is an ocean world. Howeve...
In a lot of stories there are fights between man and machine; rogue AI that has decided humans are inferior in some respect and chooses to wipe them out. What if the only chance for any remnant of...
What happens when PVA glue sets? I am curious about the white PVA glue that is commonly used for bonding wood and paper. Although an Internet search find lots of articles they mostly seem to be ne...
If this earth were cubed shape would it be possible for Magellan to prove that the earth is cube-shaped without going to space and looking at earth? It might seem strange to think that earth might...
I've been researching the idea of spreading out vast sheets of aerogel across regions of Mars. This would theoretically have the effect of both warming whatever land is under the sheet - thus melti...
Hello everyone, I am thinking yet again about infrastructure. (my calendar project recently asked about... well, that's outside my expertise, I'll get back to that eventually) And I am thinking of...
I imagined a person who's scapulae is overly developed and extruding outside the shoulder girdle like an elitra or fixed plane wings. They can be moved by shrugging the shoulders or rotated by rai...
Making a hair cream without using any lipids/oils, is it possible? What will be a fundamental composition of such a cream that it is easy to wash from the hands?
I understand that both Creatine and Carnosine are amino acid derivates abundant in Animalia muscle tissue and are both occasionally taken by non-aerobic exercisers to enhance performance. The huma...
Some people straighten their head-hair with what's named: Keratin straightening Keratin smoothening Keratin rebonding Keratin treatment It is an external hair straightening procedure in wh...
Let's say I have a bunch of pre-pubescent children (circa 8-12 years old). Let's also say I subjected them to some drug/process/whatever that caused them to stop growing. In particular: Whatever...
So, I was writing an outline for the battle between a dragon and a bunch of humans. However, a key component of the humans' battle plan was to place a hidden stash of ballistae near the entrance wh...
Leviathans are closely related to hydrophis spiralis. Some characteristics of these leviathans include: continuing to grow until they die and are able to grow almost as large as a blue whale are ...
I'm writing creative text and I'm curious to know, just as possibility, can a galaxy by any chance be formed out of a black hole?
i am not talking about xenomorph or moray eel type of jaws or multiple mouth or lower jaw inside the mouth. but this type of mouth/jaws or i called it double chin jaws where the chin also work as ...
So, after trying to make a few different world maps and not really feeling satisfied with them, I decided to attempt making a world a bit more from scratch, by adding in plate tectonics. Now, I did...
How effective or possible would flying machines that are not powered by a machine be on a flat plain? I have a setting where much of the world is a relatively flat grassland, and the people have n...
My civilization is planning to being starlifting, mining a star by heating up portions of its surface and using a powerful magnetic field to channel the matter away from the star and into storage u...
On the earths surface, radar is pretty sweet. It apparently penetrates the atmosphere well and bounces back and can be detected. I think this has to do with the wavelengths absorbed by our atmosp...
I am wondering if habitable planets could form around stars in super dense dwarf galaxies. There are some super dense galaxies such as M60-UCD1 and M85-HCC1 which can have a typical distance betwee...
Roughly how long could an 'Oumuamua type object get if created naturally or if created artificially using fused rock? What would be the limiting factor governing the length of such objects? Oumaum...
So, my understanding of how Alcubierre drives would theoretically work is not particularly complete. I know it involves compressing and expanding space, but I don't really have an intuitive grasp ...
Suppose, for instance, you lived in a world filled with nasty monsters and other creatures of the night, all of whom wanted to kill you and eat you in various ways. Now, the good news here is that ...
The moon is similar to earth but orbits around a gas giant, the sun has ended its life cycle and so the only energy received on the moon comes from tidal interactions heating its core. On earth an...
What exactly are the relevant numbers for such a calculation, and can it account for the color of the sky? By sky color, I mean the day to day hue that humans (or something else with very similar ...
Background I am investigating the practical utility and limitations of a procedural-generation-based naming scheme for stars and other notable or significant interstellar structures (e.g. nebulae,...
On Venus the surface is around 467 degrees Celsius. At the top of the atmosphere it is much cooler, and at around 60 km above the surface the temperature is around 40 to 50 degrees Celsius. This is...
My fungus starts out as an extremely small spore, this small spore will bury and implant itself near the spinal cord and cerebellum, and will then secrete an enzyme that hijacks and later puts it i...
While the intended end state is that this planet can support space-faring lifeforms, the solution under question needs a sanity check. I cannot commit to many numbers with how speculative this all ...
Set during the Cold War period, the then-president rented five (5) flying saucers from the extraterrestrial aliens and a few training exercises were conducted in the air space above Roswell. My fat...
When designing a flying car intended for congested city routes with slow traffic, should turn signals indicate all possible directions. In most sci-fi, I've seen designs that have no turn-signals o...
A human crew of 6 has been sent on mission to Mars The lowest energy transfer to Mars is a Hohmann transfer orbit, which would involve an approximately 9 month travel time from Earth to Mars, a...
Apart of the Anatomically Correct Series Vanara The Vanara is a group of people who lives in the forest in the Hindu epic "Ramayana." In there, it describes them as human-like, with reference to...
Fairly straightforward question. Imagine a gas giant planet, like the size of Jupiter, in orbit around a massive star. The star goes supernova. What happens to the planet? Is the energy of the su...
The technical challenges for Breakthrough Starshot list the huge amount of power required for accelerating a solar sail to interstellar travel speeds and the precise targeting of laser beams of tha...
One of many things that differs the pregnancy of my Keplerians and that of humans is that in Keplerians, there is a symptom that is equivalent to a positive pregnancy test. To explain this, first, ...
(This is the third in a series of questions, starting with Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands? and How soon does the Earth's surf...
Is it possible that a planet/moon will have inverse direction comparing to the rest orbiting material? For example Mars would go in counter direction comparing to other planets in solar system. I...
If you're studying radio signals from Earth, is it possible to calculate whether a radio source is 'near' as in near Earth or 'very far away' as in somewhere far out in space from velocity, or velo...
