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Yes, nuclear fission is reversible. Actually, it's more like fission is the reverse of fusion. Fusion is what stars do. Mostly stars fuse hydrogen to make helium. Fusing light elements releases...
One way to achieve this would be to simply change the structure of Earth's magnetic field. At the moment, the field is that of a large magnetic dipole, with the field produced by the motion of flui...
It is said that in dense rainforests, only 1% of sunlight (sometimes less) reaches the forest floor, which greatly restricts the types of plant and animal life that can survive there. My (limited) ...
In a world where pollution and population have drastically reduced the effectiveness of sunlight to grow food, would light-panels be capable of completely replacing the sun? The problem I'm trying...
I know that this is a bit silly, but I want to make a calendar for my world and I'm really worried about having to do leap years and such to ensure continuing accuracy. Inaccuracy isn't an option;...
A speedometer is a gauge or device used for measuring instantaneous speed of moving vehicle roughly speaking, so for example the reading shown on the speedometer of a car parked at road side displa...
I'm currently designing a world where the inhabitants see the Aurora Borealis on an almost nightly basis almost all the way to the equator. The lights are so strong they rarely see the stars beyond...
Is it possible for a large enough Ion Drive with enough power to be dangerous to other objects "down wind" of the vehicle, even at long distances (100+km)? As I understand it, ion drives accelerat...
Time travel works...just invented, by you. The tests prove it! After many conversations and significant planning, your epidemiologist significant other has approved your plans for time travel, for...
I have an idea for a land based mobile organism that moves and uses photosynthesis for its primary means of energy generation. Can a motile organism conceivably get enough energy from photosyntheti...
It's my understanding that if an Alcubierre drive were to be constructed, it would be able to function as a time machine because there would be certain paths through you could take to get to a dest...
How does a Neandertal compare with an anatomically modern human? This diagram below is a simplification of the real answer: The average Neandertal male stood 64 inches tall, weighed 143 pounds an...
How could I modify an alternate Earth to have less tornados in the American Great Plains area known as Tornado Alley? Maybe make the Rockies lower? Introduce an east-west range of mountains or high...
What coloration pattern/ technique could a large mammalian predator employ to evade detection from other mammalian predators at 100 -> 20 meter distances (or close enough so that it could sprint...
Price's Law is a hypothesis that in an organization, or across an industry, roughly half the productive output is being generated by a number of people equal to the square root of those participati...
I'm speaking as a regular user here despite that "staff" label next to my name. Scope is decided by communities, not imposed from above. I think science-based questions about sports, like golf in...
That's a lot of questions all lumped together in one, and as I don't have an hour or two to write up good answers for each of them, short ones will have to do for now. There are 500+ tags, app...
It's not black at all, it's not even light (or maybe even any other wavelength of photons) at all, but something about the magic interferes with the ability of our rods and cones to interact with l...
Since manipulation of the brain is prohibited and illegal modifications are assumed to be reliably caught, the obvious way to check someone's identity with biometry would be by checking their brain...
No matter what mechanism your animal uses for running its systems from sunlight, you still have the fundamental limitation of sunlight power per area (insolation). Solar insolation at earth's dista...
[science-based] almost certainly should be removed - I think we can safely assume that a site called Speculative Science is going to require science-based answers across the board. If an post's not...
It doesn't make much sense to talk about transmitting "keys" when the encryption is analog. Since you want to stay away from digital, the encryption and decryption will need to be done in analog h...
I assume proper hygiene to prevent post-implant infections, which would otherwise be the biggest risk. Presumably the lab-grown hair needed some hormone(s) to stimulate its growth. There's a chanc...
Kind of depends on whether you mean water as in H2O molecules or water as in state of matter = liquid. The amount of liquid water will naturally vary a lot depending on seasons and warmth. We know ...
In the "Scientific Speculation FAQ" page, at the section "What are the different categories for?", the categories are described as: Q&A is for general questions. Researched Q&A is for que...
