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I'll try to keep this question as concise as I can, but I'm not great with technical jargon, so a simplified answer would be greatly appreciated. Here's the set up: I have binary star system with...
Let's say I happen to find myself outside of earth's atmosphere [right at the Kármán line 100km up] one night and don't wish to cause a fuss as I descend to my home. I am stationary in regards to...
In the year 2020 A.D. , the inhabitants of earth are visited by a not-so-friendly race of techno-pathic AI aliens ,numbering about 500,000, and originating from a type 2 ¾ civilization from a gala...
How could a planet which humans could land and survive on with no space suits or other help have a green atmosphere? The only requirement is that humans landing here would have to be able to breath...
I'd like to travel really really fast, and I've got some scientists proposing a novel new way of doing so. They've developed the technology to generate extremely powerful controlled gravitational ...
Preface Evolution is great for trial and error over millennia. It creates wonderfully intelligent creatures that are suitable for a variety of habitats. All it needs to start with is a creature th...
Right now the Earth rotates around the y-axis so East and West replace one another. What would the affect be on Earth's seasons if it rotated on either other axis? The first is the Z axis, pointi...
In my setting, military innovation spurred by the American Civil War (1861-1865) prompts the design and construction of counterweight-driven skyhooks for the delivery of suborbital long-range munit...
I am trying to write a sci-fi setting in a not so distant future in which analog signal (brainwaves, in this case) processing is one of the main points of the plot and pretty much required to expla...
Because Boron is directly to the left of Carbon and Nitrogen is directly to the right of Carbon on the Periodic Table Boron-Nitride has the same types of bonds and so as carbon and so in combinatio...
In an answer to this question Cyrus suggested that pre-technology merpeople might use shrimp or prawns in lue of maggots to eat away rotting flesh. Similar to how plants and (in some cases) anima...
This is somewhat vaguely related to a old question of mine involving a alien species who spend three thousand years developing a post singularity spaceship armada in the mantle of a lava planet (In...
How can I explain, in a believable way of course, that country borders closely resemble drainage divides? They don't always match mountain ridges, which are natural borders "“Â as are the rivers th...
I'm currently writing a narrative and hoping to include a world which is home to a sea of some form of 'nasty' substance (doesn't have to be acid). The varieties of inhabitants of this world have ...
The leprechaun. A little ginger humanoid dressed in green, with buckled shoes and a matching hat, and a massive pot of (tax-free) gold. We all know them. Or not. For the world I'm building, I've d...
I want to be able to have interplanetary travel very cheap and fast, within minutes. Seeing as planets are light minutes away from each other, I suppose even for fast interplanetary travel the tech...
As recommended by another user, on a different question I asked, I pose this new question under the following criteria: The creature I'm trying to create has evolved, though it may not have been e...
I was thinking of a situation in which a life form evolves a biological screen somewhere on its body that can play videos. The life form would play videos on its biological video screen in order t...
So, a visitor (whether they be from another planet or another reality) gets deposited on the face of the Earth. They find that the air's breathable, that water and suitable macronutrients are avai...
For the purposes of this question only, I am making the following definitions: Cell: a microscopic, membrane-bound subunit of a living organism. Living organism: an entity composed primarily of b...
Start with a powerful space-faring civilization. They are Kardashev Type II, having harnessed the total energy output of their sun. To do this, they have encapsulated their star with a tight-fitti...
Imagine that we start expanding the International Space Station until it becomes a ring encircling the whole Earth. Then we started widening the ring until it met at both poles, forming an orbital ...
Many myths have creatures like sirens who can use their voices to lure men to their deaths. But is there any way a creature could exist in the real world that had that power? I don't just mean foo...
Would it theoretically be possible for a solar eclipse to occur within a few days or even a few hours after a total lunar eclipse? The star, moon, and planet from which the event is being observed...
The eventual heat death of the universe is an awful time to be alive considering you wouldn't have long left after the last star finally fades away. In this scenario there is a small group of about...
