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I'm looking to create a species of marsupial that is heavily K select, which is to say they put significant effort into raising their young after birth (both of them :P ) in which both the male and...
Section 1: Non-Duplicate Proofs. Section 2: Background, THE QUESTION, and Useful Info. Section 3: Other cited ways of preventing. Section 4: Sources and Additional Resources. Section 5: TL;D...
I'm currently outlining my science fiction novel which deals with humanity reaching Type 3 civilization status. My goal is to place an emphasis on hard science fiction while featuring fantastic tec...
The situation: the good guys are attempting to infiltrate an enemy base, and cause mayhem either in person and/or by planting explosives and running away. They know there is a big dust storm on the...
There are several previous questions concerning concentric shells. I won't reference them here because this is different. I understand that there is no gravitational effect inside a concentric she...
Now that FTL travel is here there are all sorts of family outings we can go on. One of these is a scale model solar system lovingly made by hobbyist Barty Slartfast. In full scale Sedna is thre...
My worldbuilding involves a reasonably near-future, high-realism space station research outpost, and I'd like it to be powered by a nuclear reactor. However, I need as much detail on the actual rea...
The Karman Line is one of the most commonly-used definitions of the "edge of space". As an airplane flies higher in the atmosphere, the air gets thinner and thus the lift decreases. This can be c...
Everybody has seen superpowers like superstrength, flying, and regeneration. While flying and superstrength are quite straightforward regarding the energy cost, regeneration is not. In this questi...
How can I predict the color of the sky based on the information provided? Atmospheric composition: | 2% Trace gases | 58% Nitrogen | 26% Oxygen | 11% Argon | 3% Carbon dioxide | Average s...
I've looked around the forum but didn't find an answer to this particular question. In short, what food could realistically be produced in a space station assuming current (or near future) technolo...
So in this world somewhere in distant future. The government has created I.D Chips that are designed to be biologically implanted into its own citizens. To ensure extra "security" and also act as a...
I have a region on a planet with identical parameters to Earth but different landmasses that is rather similar to the southern ocean on Earth. There is a single piece of land around the size of th...
If the holograms are really advanced like the hologram of Snoke in The Force Awakens and they are haptic, which means you can feel them, can they be used to make an immersive virtual reality envior...
There is a group of people with about renaissance-level technology clearing out underground granite. They have no access to work animals. 700 men are working at any given time. Mining Using rena...
If a parasitic creature was discovered, how would officials determine whether that parasite was a new species or an existing parasitic species? How long would that process take? Assume the specie...
Assuming that the only fancy available technology is FTL drives (to get there) plus anything needed to protect and sustain a crew during the journey from Earth to Sagittarius A (whether it takes a ...
So I'm thinking about orbital warehousing of raw materials but I'm wondering whether one would actually need an orbital structure to store the goods inside or could you just strap a booster to the ...
So my story is set in the TRAPPIST-1-system and a rogue planet enters the system. When it's still far off, a scientist discovers that one of the numbers is slightly off. (She has some tables that p...
I ran a quick calculation, and the mass of iron required to form a black hole is on the order of 10^40kg. So, suppose that in my story there is this almost much iron available to somehow be brough...
I'd like to explore some details on a so-called water-ball planet (i.e. a planet in the habitable zone of a sun, covered by a 100 km deep ocean). I am particularly interested where life could devel...
Premise In this Earth-like world, a multi-billion dollar privately owned aerospace/defense corporation is devising a secret plan to manufacture a fleet of nano-bots. These nano-bot have swarm inte...
I want to put a circular city in geostationary orbit. The city will have a radius of 20Km. I was thinking of using quantum trapping/levitation to achieve this. Here's what quantum trapping is: ...
I had this one idea of having the government create chips that monitor the thoughts of prison inmates as a way of preventing future crimes. At the same time still, give them a degree of freedom and...
Inspired by Spaceship orbiting a black hole under the event horizon - a prison where no one escapes, I was wondering if it is possible to make a space elevator that goes down into a black hole. In...
What amount of energy would you need to expend to create an arm out of nothing but energy? Of course we have $E = m c^2$ telling us the energy any amount of mass represents. Given the average of a...
Back home, Earth had gone through an impact-coalesce cycle only once. Since then, its core has been 84% iron, 6% nickel and the rest being labeled by The Encyclopedia of Earth: A Complete Visual ...
As you know, Earth has active and moving techtonic plates known as the lithosphere. They float on the asthenosphere and slowly move about. Here's my question: Can a planet with a hot molten core h...
Assume an Earth-like or super-Earth terrestrial planet in a state comparable to Precambrian or Archaen Earth. The atmosphere is mainly nitrogen and carbon dioxide, perhaps some methane, but very li...
I was curious about an odd effect I first saw in video here: YouTube : Copper's Surprising Reaction to Strong Magnets In the video, a big heavy magnet is brought to an abrupt halt by a simple piec...
On earth there can be hours where the moon is up during the same time the sun is in the sky (daytime moon) due to the combined rotation of earth and orbit of the moon. I would like to have an earth...
This is a follow-up to Neutron Star mining. Assuming that problem can be solved, it would eventually degenerate to something similar to this case. And if it can't, white dwarfs seem like the next b...
So the background is simple: in the modern day a CME (coronal mass ejection, a solar flare that has escaped the sun) hits the Earth and destroyed all the electrical equipment causing planes to cras...
Three natives who study their version of science on the surface of a large rotating habitat located in a cylindrical shape in the space between our solar system and Alpha Centauri, are trying to fi...
So lots of Sci-fi works use mono-crystalline diamond as a wonder material used to build all sorts of impressive and in some cases seemingly impossible structures, I'd like to ask about the science ...
This is in reference to Could an organism have evolved to kill its prey by shouting at it? However, most answers here speak towards the brute force side of the equation, measure by it's decibel le...
I've been reading here for a little while, but this is my first question. I am trying to come up with either a concrete set of numbers for a single answer for a binary planet system, or a simple fo...
The end goal is to have human like beings with vestigial horns or antlers, but I am unsure of what types of horns they should be. Apparently there are three type of horn: living horn-bony outgr...
In my earlier question, regarding airships, I mentioned fictional gas, as light as hydrogen but non-flammable. Is it possible to make chemical element, with atoms made not from nucleons, but with s...
For the purpose of this post, full spectrum means a non-trivial number of frequencies within a non-trivial band. So human eyes aren't full spectrum within the visual range (each cone is wide band, ...
So, I the question of what if a black hole hits the earth has been asked to death by various people, but what if the somewhat tamer wormhole hits the Earth? In particular, we'll say that one mouth...
What kind of technology would be required for a space travelling civilization to have an effective communication system or network that is similar in speed to the telegram? How would it work? This ...
EDIT: As it turns out the method I had thought of using to combat aging doesn't work the way I expected. As such I have rethought this question in more vague terms. New Question: Using current hyp...
Information and Context I'm working on a story, based 220 or so years in the future in a hard-science universe (where a quantum jump drive has been invented). I was wondering if anyone could giv...
AA (azidoazide azide) is a hyper-explosive 14 nitrogen molecule. My questions are: what are some theoretical ways to store it so it doesn't explode on you but on the enemy you throw it at, and what...
For a while now I've been building a science fiction world and I've been thinking what would be a feasible way to power a large ship capable of interstellar travel. I've always disliked the idea on...
And how much fuel would you need to carry? I'm trying to determine what kind of engine you'd need to accelerate a good-size spacecraft (thousands to millions of tons) at a constant 1g in a race acr...
The year is 2030. The US has set up a moon base with about 2,000 people. The base can theoretically survive indefinitely, growing its own food and 3D-printing supplies, but in practice it needs t...
People have been trying to imagine elaborate alien biologically possible ecosystems for a while. A lot of people seem to both want but ignore one of those fundamental aspects of our own ecosystem, ...
Planet has these characteristics: Half of the planet is always on day, and other half is always night (it rotates at the same velocity as its orbit) There are no underground water sources; it's a...
