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In our universe if there are two objects that are moving relative to each other then each will see the other's length contracted in the direction of motion and it will see the others clocks running...
Would it be possible for a planet to form so it has all of the landmass in only one hemisphere? By landmass, I mean all landmass that is above sea level. And human-habitability is encouraged...
So I'm approaching this question the wrong way. Instead of asking how long a road would last (which is apparently too broad for stackex), let me tell YOU how long I want it to last and you can tell...
As a series of anatomically correct myths, here we have the Cyclops. One of the most similar creatures to man but with 'one' noticeable difference, one eye. It seems that land animals love their tw...
These creatures are a few feet longer and about a foot thicker than your average cow. Their skin is covered in densely packed bristles to trap air, and thus heat, close to the skin in cold climates...
In a universe with no faster-than-light travel, the Solar System has largely been settled, and has been for at least 200 years. I envision populations to look something like this: Earth: 8 billi...
If I had a parallel universe that had all the basic ideas of our universe (gravity, friction, inertia, etc.), how could I logically have certain animal breeds not only talk, but communicate verball...
I have an AI character who has determined through simulation that, though "greed or the lust for money is the root of all evil" is a valid statement, it does not necessarily logically follow that m...
Inspired by this question: Talking animals in a parallel universe I wonder, would it be possible, if there were more species which created their own abstract means of communication, would they b...
Our Earth and Venus each keep a thick atmosphere because of a magnetosphere. Most terraforming scenarios of Mars involve transferring water and other gases from the ground to the atmosphere. We no...
Suppose there's an earth-like planet, perhaps even modern day earth itself - and at one point in time, it began to be bombarded by a continual stream of Electromagnetic Pulses. For the sake of sim...
In the near future, the last of the human race has been forced to retreat underground due to extreme global warming or some solar flare event. Vertical hydroponic farms provide the food for the s...
Pretty straightforward. Is there an event which could get rid of the majority of the Earth's magnetic field quite suddenly, but only for about a decade? Could anything manmade assist in this?
I have a parallel universe very similar to Earth but with a society with the technological level of Europe during the Middle Ages. I want this parallel Earth to be one big continent, one giant land...
This isn't exactly worldbuilding but honestly, I wouldn't know where else to ask it. The scenario goes as follows. In an utter cliché moment you get summoned by some wizards to help their country...
In my WIP (webcomic in progress) mentioned in my other posts, there is an earth-originated colony based on an alien planet in a semi-post-apocalyptic society with limited technology and resources. ...
What would be required for a generation space ship to give residents the best possible living situation while still using the least amount of space, given the possibilities to have access to common...
I was at a musical event a while back and as I saw the brass instruments a question popped my mind, could an animal come with an instrument built in? It seems far fetched but evolution has given us...
On Earth, the presence of tides due to the Sun and Moon influence certain currents and other movements of water. This in turn leads to different forms of erosion, which can transform a landscape. ...
The time is near-future. For peripheral reasons, the United States and the people of Utah have just had it with the Great Salt Lake: everyone wants it empty. There is a justified need to use the ba...
I'm beginning to build a world for a story I want to write. The world consists of a planet, roughly earthsized, with a couple of natural satellites (moons), and roughly same orbit and a similar sta...
If Mars was vaporized by aliens, how would it affect us? Assume that the core of Mars exploded, sending the debris flying in all directions, and that some would pass close by, but not hit, Earth. H...
Before we begin, two things. This question was inspired by this one. I definitely don't want this to happen. So, I have two very close tidally locked planets, each fills up about 2/3 of the sky of...
In my earth-like world, there is one thing that separates it from Earth; this world has a single rocky ring, around 10.3 meters thick, 5(ish) miles wide. In our own world we know that without an o...
Imagine, if you will, an Earth-like planet orbiting a Sol-like star. Now imagine that, from somewhere outside the solar system, a rogue planet, rocky and of roughly the same size and mass of the f...
