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Given the daylight cycle discussed here (see the graph in the selected answer), suppose that the moon revolves in the equatorial plane, at a distance sufficient to light (barely) the poles, avoidin...
I am imagining a special ecosystem on a rogue planet (a planet that wanders throughout space without orbiting a star or other heavenly object) but I would need your help to fill in the gaps and rea...
I was reading the Q/A on water as radiation shielding. The prime answer went in to detail on the cost to lift water from Earth which is cost prohibitive, but how feasible is it to get the water fr...
How would waves and tides work on a planet that is completely covered by Ocean? It would have: Oceans of Similar depth to Earth's Atmosphere extremely similar to Earth's Same type of star and di...
This is Rainbow Dash: I somehow don't like this design, because this suggests that RD dyes streaks in her mane, which seems to me contrary to her character traits. Which is why I like this fan ...
Would a starship that was propelled by magnetic monopoles fly faster and longer than ion engines (assuming magnetic monopoles exist) of course.
I'm not certain if it's possible, honestly. I know some cartilaginous fish like sharks and rays that have tooth-like structures lining their skin, called placiod scales, but I've never heard of any...
Could you map out all the connections in someones brain just by probing every neuron and tracking them as they send signals to each other (as opposed to every synapse, a much less ambiguous but far...
Background: Most of the population on earth has wings. Wingspans are normally around 13-19ft long depending on the person. Some have lost wings, but I don't want them to be 100% crippled and unable...
I need a reason for two antagonistic humanoid lifeforms living on the same planet to be completely incapable of direct physical contact. I don't mean they have a strong aversion to it, I mean the...
I'm trying to find a common or easily transmitted illness that would prevent a person from eating for several days (or keeping down/digesting food). I know there are a lot of things that can make e...
I'm in the process of designing a creature loosely resembling a theropod dinosaur that sports a number of horns/tusks on its head and face, and I'm wondering if anyone can help me evaluate its feas...
In my desert canal world all water is supplied from the poles to the temperate zones via a canal network. I want to work out the amount of water that that is needed, so that I can work out the dime...
After seeing this question, I wondered what weapon of choice (and, logically, the grand scale of energy amount) is needed to shatter the moon. Let's take our moon, the Moon, the natural satellite o...
I would like to know if there'd be any way to forge a metal with an amorphous natural glass such as opal or obsidian into an alloy. Could such a thing be crafted into tools? Would it be conchoidal ...
About 200 years from now, a human scientific expedition, lead by a international coalition of Earth nations, is sent to an alien moon around a habitable planet, light years from earth. Like it's pa...
I've been watching the recent news about the close pass of the interstellar object 'Oumuamua'. It apparently passed as close to us as 60 times the distance between the Earth and the Moon at it's cl...
In my city, a very high skyscraper stands at the center. Somehow, a tree, in a span of [x] years integrates itself into the building. Its branches reach out from the top of the building and its sha...
I create a world having three moons. Since precession cycle is influenced by our moon, how do I calculate the duration of the cycle with three moons? Thanks
I'm working out a concept for a story where there's a gas giant with at least 6 habitable moons (willing to use teraforming tech to get over any big hurdles) and the planet itself has a ring of roc...
I know that light can be affected by gravity. But what if there was a planet where if you shone a light in a direction and it could hit your back. I'm talking about a planet where light is bent aro...
My civilization is highly advanced Type III and wants to conduct an experiment on a red dwarf. They want to artificially cause it to become a blue dwarf, then a white dwarf and then finally a black...
This question has similarities to this one but concerns canal travel in more ancient times and is aimed at finding an approximate speed of flow not variables. Background Assume an Earth-like world...
The setting I'm thinking of is in the not-so-distant future where humanity has become an interplanetary species using conventional propulsion. The solar system is largely colonized with human settl...
In a fictional setting, an Earth-like planet is orbiting another, Jupiter-like planet. For explanation see my previous question Which astronomical or cosmological event would explain periodical lo...
