Posts tagged alternate-worlds
Assuming we have a world at the same stage in global warming as the Earth, with all other properties similar (population, carbon emissions, general climate, orbit, etc.) How long will it be until t...
I am hoping to create a planet with a greater rotational speed, making it oblong, thus causing differential gravitaion from the equator to the poles. I am hoping for the gravitarion to be lighter t...
Appearance The ''vipers'' are semi aquatic humanoids species with webbed fingers on both hands and feet, they also have 2 fins on each leg and their legs are covered in scales from the feet up to ...
Is it possible for a planet to have very little visible-light energy and receive enough energy to support life from ionising radiation? Dim light, including starlight and ionized-air glow is accept...
A star system consisting of two stars forms, with one being more massive. As such, the larger star soon exhausts its fuel and ends up as a neutron star. The secondary star has a semi-major axis of ...
Stanley Miller's experiment was an amazing step forward in unifying inorganic and organic chemistry. It was also a landmark development for the theory of chemical evolution. Miller-Urey Experiment...
Since I'm creating a "new world" for my story, I wanted to know if the following conditions would work for an Earth-like planet: Its moon (more or less same size as our moon) being much closer (...
How do I calculate the spectrum of light experienced on the surface of an alien planet? I need it to decide what color the local photosynthetic life will predominantly be.
On the world I am building (Let's call it Bob for simplicity's sake), the days last 9 years. As a result of this, the living beings on Bob must migrate across the planet to avoid the encroaching ni...
Introduction I have been looking for information on the Internet. I have discovered that the shape of the planets is due to the gravity to which they are subjected, so they are spheres (,but they ...
Not sure if my intuition here is right. All else being equal, would a massive ocean yield larger and more severe storms? If, say, we removed the Americas, would the new Atlantic-Pacific Ocean be m...
What's the longest plausible orbital period for a habitable planet with a 3:2 spin-orbit resonance? I want a planet with a 3:2 spin orbit resonance (which would experience 1/3 of a year of nightti...
Could an alien underground macroscopic ecosystem including human sized plant-like organisms evolve around lava as an energy source? These organisms could use heat and/or light from the lava to synt...
Situation: a large terrestrial planet (a 'super earth', around 9 earth masses with a surface gravity roughly double earth's) with a mostly hydrogen atmosphere and ammonia oceans (pressure is high...
I'd like to know if a planet without any animals except humans can exist. The cause of this absence of other species could be anything but the humans should not have any social interaction with som...
In the book Dune by Frank Herbert. Arrakis is a desolate planet composed entirely of deserts. Water is a precious commodity due to its rarity. The Fremen have found ways to live on its surface, des...
Imagine an Earth-like planet with a moon that is closer to the planet than ours with a lunar cycle of 18-19 days. I am trying to imagine how this different cycle would affect human beings and anima...
In some environments (think of the Faerunian Underdark for a fantasy example, or a planet orbiting a pulsar for sci-fi folks), high-energy (UV and up, but I'm mostly concerned about UV and very sof...
I'm building an alien world for a game mod, and want to avoid any blatant mistakes from a world-building perspective. The world has three moons visible in the night sky - two on one side near each ...
The film Upside Down showed a fiction movie where 2 planets of gravities exists within a fairly short distance. One may also assume that all parts of one planet is parallel to the other, which mean...
What I mean is: instead of a "rat" evolving into primates and those tree hugging primate becoming bipedal great apes, imagine a "rat" evolving into a dog-like or cat-like animal, then that animal b...
I'm currently creating a world with a population of about 4.5 billion people and 21st century technology. In fact, the world is strikingly similar to ours. Oh, except the islands that is. The en...
I want to create a planet that has a frequency of two rotations per second, thus making a "Planet without Night". The planet will be like a flattened disc, due to inertia causing the planet to be a...
UPDATE!!!! - FINISHED THE SCULPT :D [UPDATE: Much Much bigger response and feedback than i anticipated, I am hugely greatful and overwhelmed by the ideas and the help, I will keep the thread goi...
I'm working on a deconstruction of a high fantasy setting. The plot starts with a female protagonist being forcibly summoned into said setting with few to none of her memories. The world is popul...
The coldest place in the universe that we have observed is in the Boomerang Nebula. Similarly to a refrigerator, heat is carried away through a fluid, resulting in a space colder than the surroundi...
Welcome to Smooth World. Most of this planet (at least two thirds, but preferably more) has only tiny differences in elevation, 30-40cm at most. No hills, no mountains, no valleys. Even plains fou...
I'm really excited that this topic actually exists here. For the past weeks I've been thinking about creating my own fantasy world - because there are not quite enough yet. My primary aim is to mak...
Imagine: A Kardashev Type I civilization mainly resides on a planet analogous to Earth, with one moon, analogous to Earth's moon. Eventually, the society grows so complex that machines filling spac...
This question is basically related to my former question: What would change if our Earth lacked mountains? (Geology) So in my world people have stopped at a level of wisdom that might be similar t...
I'm piecing together the biology and ecosystem of a Titan-like cryoplanet. And I want it to have clear or nearly-clear skies instead of Titan's complex hydrocarbon haze, so that my ethane-based lif...
I have created a world map for a story I'm making. And it has been too long since I studied geography and geology. Assuming earth-like conditions, and a normal distribution of climate based on (a...
This sounds really stupid, but I'm trying to think of a way to make World Turtle work. And what I got after 5 minutes of careful deliberation, would be that the our earth would have to be 'flat' on...
I recently read this article (http://www.space.com/5985-hottest-planet-discovered.html) about a hot Jupiter that orbits it's star about once a (earth) day. This and remembering how high of an albed...
I am designing a world where humans have somehow developed or have been put onto a planet in a primitive state. This world has only been habitable for about ten thousand years and therefore only ha...
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...
On Earth, there are geothermal vents - heat coming from underground vents that support life at the bottom of the ocean where the sun cannot reach. My question is, would this be possible to support...
Primate evolution has led to the loss of a heat cycle. This has allowed us to have children at any time of the year. But imagine a world where humans never gained that ability, perhaps even evolvin...
Five million years ago, the warm Miocene gradually descended into the cool Pliocene before dropping into the frigid Pleistocene. Such a change in temperature was so gradual that life went on withou...
I have an alien race that is carbon-based, like life on Earth, but this alien life uses different essential elements in their biochemistry than those elements used on Earth. I'm trying to come up...
You have undoubtedly played them. Games with floating land and platforms, "falling out of the world", high jumping, floating and slowly revolving objects, and wingless flying enemies. Question: W...
So I'm writing a story on a population of lizardmen who have subdued all the human population. Since lizards spend lots of their time soaking in the sun, I'm not sure how should I go for the night...
Related to this question, which deals with the no-papers visitors. However, in my case, instead of a character with no paperwork whatsoever -- we're dealing with someone from an alternate reality ...
I am working on a world and I have run into a minor roadblock. The world is altered such that one of its polar regions is constantly facing the sun and the other is always facing away. I figure tha...
Imagine a planet with the same climate all on the surface. There is only one living creature on this planet (let's say a plant to avoid food problem). It is perfectly adapted for the climate. And ...
Everything on Earth and in the Solar system is as we know it. However it is discovered that we live in a small but unbounded universe. That is to say if we travel far enough in a straight line we w...
Okay so we have the case: My world is Earth-like(Spherical) Slight fantasy, but also some science It has a normal day-night cycle and seasons I need for a particular area to make the sky somewh...
In a world where duodecimals (base 12) have never been invented or thought of, how will decimals replace them? We now know that we owe everything related to duodecimals to the ancient Egyptians an...
We are living on a planet where governments are constantly trying to reduce the amount of pollution and emissions in a bid to slow down (or reverse) global warming. But imagine a world where the Ea...
I ask this as a basis for a World (in this case Moons) Building I'm doing. I came up with a couple of different problems and some possible solutions to those problems: All of these questions pre...
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