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If I have a typical Dyson sphere, around my star, it will block the light needed to live on an orbiting planet. Is there any other megastructure that can function like a Dyson Sphere, but does al...
Obviously, it's not a good idea. The premise: An advanced species has a plot to remove everything in our airspace and place it 1.5 million kilometers away from Earth. Their purpose is a misguide...
So aliens have arrived in the solar system. They have faster-than-light travel technology and the ability to handwave away the supposed causality violations that such an invention causes They're ...
It's hard to create a new animal from scratch. If you genetically modify an existing species until it becomes a drastically different species, then implant the fertilized embryo in a female of th...
Was there a geological era in which the rain on earth was harmless and with the same temperature of the water in a hot shower?
I'm building a map of a fantasy town and its surrounding area. I'm using Campaign Cartographer (CC3) for this and I'm striving for appropriate scale. I know that, nowadays, the average outside wa...
As part of a series on plant animals, plantimals if you will, I am now asking about ears. All surface life has them or some sort of equivalent to them and with good reason. Other than sight, hearin...
My knowledge of Stirling engines is that they work via a heat difference and are extremely heavy when used on a larger scale. This makes the use of them on vehicles a strange choice when there are ...
On the Life Ball of my fantasy stories, a particular species of delphinidae- I call them black dolphins- have evolved and advanced at least as much as humans and other intelligent races. A prior q...
Need ideas for the evolution of the kumiho, the Korean nine tailed fox that is native in the Korean peninsula. First of all, this species is sex...
Let's say you have a cyborg who's replaced their whole body, everything but the brain, with machinery. Next, you put them on a spaceship pulling dozens or even hundreds of gs. How are they going to...
How do force field work in many sci fi fictional universes? I remembered the last time I checked the strength of the electromagnetic field a.k.a force field is proportional to the power output from...
Let's say that, in a universe modelled after Patema Inverted, there are two "flavors" of matter: one which is attracted by gravity (so when dropped on Earth it would fall down), and one which is in...
After reading Is it possible to build a bridge between planets?, I wonder: what situation would provide technology support that enables them to make the trip, but limits them to walking speed? Th...
Anatomy wise, how could growing legs or having your legs melded together to form a large fin happen in a matter of hours? How could the change work in reverse? I want this to be able to work with...
[WARNING] Approximate physics incoming A few months ago I was looking for a way to get to Gliese 581 within 100 years. So I've been reading a lot from Wikipedia and other sites about different pro...
In our world's 2016, the German town of Munich is part of the country of Germany. Now in an alternate Earth I would like Munich to be part of the Great French Empire (in the alternate year of 2016...
Alternate question title: From Fungi to a Fun Guy So, I asked a previous question about which non-animal would be the likeliest to evolve sentience. The answer turned out to be fungus, since mycel...
So aliens find Earth to be suitable for colonization and disregard humanity's claim. Not because they are racist, but because they are so different biologically and psychologically that humans simp...
I suggest alteration of the name from "Scientific Speculation" to a more appropriate "World, Speculation". Why? Most questions they seek to answer are somewhat based on science, but rarely take s...
Hey everyone, new user here, I've already seen a couple of people complaining that the name isn't accurate, or it doesn't represent what is asked here, is there a pool to vote on whether to change ...
Okay, not literally Krypton style, but let's say some local astronomical event is going to render every rocky surface in our solar system totally uninhabitable. Details aren't terribly important, ...
I am interested in creating a reality based version of a creature from Greek mythology called a Siren. Sirens were believed to combine women and birds in various ways. In early Greek art, Sire...
A submission for the Anatomically Correct Series. The plant genus Mandragora as we know today are nightshades that contain highly biologically active alkaloids that make them poisonous, with the...
Zerg Overlords are flying alien creatures that aid their broods by managing lesser members of the swarm, transporting units within their carapaces, and alerting a hive about any danger they perceiv...
