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What artificial disaster could disrupt the orbit of our planet? Not necessarily making it leave the Solar System, but maybe changing its trajectory around the sun. And by artificial, I mean that th...
Starting with a creature and its environment, how does one create its psychology? Evolutionary biology and evolutionary psychology attempt to explain attributes that we observe in our fellow human...
I'm working on a sci-fi game about conquering little asteroids (about 1 km diameter). You can go into one of them and make it Earth-like so other humans, animals or plants can live there. To do th...
So I'm working on a world that orbits a blue star that's not much bigger (or even smaller) than the sun. I was thinking that an A-type star would be a good choice for it, but it's still is closer t...
There are 20 percent oxygen in our atmosphere, what if the oxygen is higher above 20 percent but instead was 35 percent oxygen. If so would an advanced civilization exist in this environment? Would...
I'm writing a spaceship that just performed an Oberth maneuver around the sun, 10 million km out, and is accelerating toward a gravity sling with Jupiter. It had a high--not certain how high yet--i...
A classical trope of fantasy is lizardfolk, or a similar species by another name (see for instance the Argonians of Elder Scrolls fame). In general, though, we're dealing with: Bipedal, often pl...
Based on an answer of mine from a few months ago, I've been inspired to adapt the concept to my own Life Ball. Fair warning- this question and some of its links are not for the squeamish. May con...
Say, we had a teleport in all bigger cities (let's say circa more than 1 million) in the world (and some other "important" places, like military bases). What would be the impact of this? Would the...
So I went and saw Rogue One recently. Wonderful movie... If you want absolutely no spoilers STOP READING NOW. The Death Star shoots up a couple planets in the movie. (Not much of a spoiler but sti...
Current technological level. (in the setting there is an awful tech stagnation, so waiting for better DNA engineering technology is considered as waste of time) Possibility to use all contemporary ...
I'm trying to figure out a concept for some sort of super-advanced space propulsion system that works by bending spacetime. As I understand it, planets' orbits are actually straight paths, but the...
Let's say there is planet, similar to Earth in almost all respects. However, some sort of geological process has shattered its continents, leaving lots of islands no larger than Iceland with shallo...
In my other question "Is it possible to build a bridge between planets?" several concepts of interplanetary bridges were formed. What I would now like to know is, are any of the proposed bridges ab...
I am aware of the square-cube law, so what conditions do I need for this to work ? The tortoise will be a similar size to the isle of Wight and will walk around in shallow areas in the ocean. What ...
In a Victorian society, an engineer has come up with a clever boat lift for his canal, using counterweights. In order to work correctly and most efficiently, the operators will need to know how muc...
I have done research on blood and in particular the component adding color and transferring oxygen. Hemocyanin is directly dissolved into the blood. This works for an octopus, but not a reptilian ...
Sister question to How do you communicate with antimatter beings? Defining dark matter for this question According to NASA, 27% of the universe is dark matter - and about 5% of the unive...
Say that a heavy (150ish kg) android was involved in some kind of incident in orbit and came crashing back down to earth (traveling at orbital-ish speeds upon re-entry). Would they be going fast e...
Scenario On Earth in the latter half of the 21st century: the increasing ravages of climate change (e.g. droughts and a rising sea level) are creating more conflict between nations over the batt...
This is related to the question as to whether or not cetaceans in an alternate Earth be related to a different group. The small but mercurial falcons belong to one order and one family--Falconifor...
Looking for options with at least some grounding in science: Several hundred years in our future, a group of wealthy philanthropists lavishly funded a colonisation project designed to create a Uto...
So, in this scenario, people are living in an Earth-sized planet, with an atmosphere. They travel via ultrafast train that carries them to the solid core of the planet, where they then transfer to ...
In an event immortalised in this Google Doodle, at 4 minutes past midnight (GMT) on Jan 1, 2017, the density of Helium suddenly and inexplicably increased from 0.1664 g/L (at normal temperature and...
My scenario It is 2150, and there are two major human settlements on Mars and a dozen smaller branching-colonies. The colonies, Genesis and Metropolis, founded by Space X and Mars One respectively...
