Posts tagged planets
Okay, there are two habitable worlds in the Solar System. One of them is Earth. Human history goes mainly the way it really went. Then, there is another planet with a sentient, equally advanced spe...
What would happen if there was two more planets beyond Pluto, one with two times the size of Pluto and another with 4× the size of Mars, I'm curious to know what effects this would have on the plan...
Let's assume I have a planet and the planet itself is made out of something solid. Around the floating rock is a layer of gas, then a layer of liquid and then a layer of gas again. Thus the sea fl...
If an Earth-like planet was tidally locked to a star similar to Sirius A, at which distance from the star would the night side be able to have liquid water, possibly with an average temperature of ...
For my WIP's setting I'm using a variation of the Sky World concept. The cosmos looks very similar to the Astral Sea. The shape of the cosmos akin to a torus and filled with a silvery ether a thin...
I would like to explore how to design an alien planet featuring plants and animals but with a much more prominent ecological role for fungi. More fungi, larger fungi, more complex and beautiful fun...
Consideration For the sake of argument, please assume the following: The planet in question is around the size of Earth The planet may contain native intelligent life, artificially engineered Th...
After writing this question, I came up with a new question. Consideration The considerations are mostly similar to the linked question (reading it is highly encouraged, as I am trying to post as...
Background In my story, HD 28185 star system harbors life. One of them is a jovian HD 28185 d (Subralis), located around 1AU of this sun-like star. In-universe, Subralis is approximately 132,000 k...
For this question lets take a trip to Slyo Dacas: Slyo Dacas (sil-yo-dak-iss) is a world roughly the same size of Earth with a decent magnetic field and no moons. The world is a bit drier than...
Consider the present day Earth. Now, through some event (magic, a giant maid with a vacuum cleaner, a disgruntled alien did it, ...), our planet is stripped of its atmosphere. Assume that this happ...
Say a technological advanced civilization wants to create an Earth-like planet using materials from the Oort cloud. Could they really be able to create a habitable world resembling Earth using ju...
Note: I am aware of a previous question Physiological effects of living on a world close to a black hole As I understand it, that question refers specifically to a planet that is in a non-ideal ...
Assuming fission thrusters as described here: Would a nuclear fission thruster with continuous fuel injection be possible?, and assuming drilling for the planet's molten mettle core as discussed he...
Imagine a world with a dead core, like Mars, but covered in water. This world has managed to hold on to its atmosphere and quite a bit of its water as well. I'm sure the prodigious life there would...
I'm curious to the affect a planet would have if it orbited around, or was orbited by another planet of equal, slightly larger mass. Say if Earth had, not the moon, but a planetary object the same ...
I am sure most of you have seen Star Wars. In Episode IV: The Empire Strikes Back our heroes travel to Bespin, a gas planet with a habitable zone to refuel at the floating cloud city. Well of cou...
Lets assume we as humankind can, not only wormhole the spacecraft, but planets and moons. So, what would've happened to Mars if we pulled icy Europa closer to the sun, we might use our flaming star...
I just stumbled across this website the other day, and this is my first time posting, so apologies if the question is too vague or improperly worded. I am trying to build an all ocean world. I'm ...
In a system where 2 planets of similar mass are orbiting around a common barycenter, would the following configuration considered stable on the long run? They orbit at 1,6 AU from their star The ...
I would like to have a world on which humans can live unaided -- they can breathe, the climate is workable, they can eat the local vegetation, etc -- but on which a complete day is substantially sh...
Hanorane (han-or-a-ney) is a moon with a dynamic surface covered in charged sand particles that drift in massive rivers suspended by electrostatic levitation. The only solid ground is the worn an...
I am trying to build a planetary system with a maximum number of earth/near earth like planets/moons. What would the maximum number of possible earth like planets be? I am assuming that some woul...
What would happen to a planet if it was really massive, like something around the size of the sun (likely made of asteroid materials)? What kind of environment might it have? What would happen to ...
Suppose a planet is covered with floating ice on top of water ocean and has no dry land. Would it be possible to establish permanent settlements, cities? Particularly I am interested in technolog...
Let's say there's an OCEAN planet smaller than Earth but larger than the Moon. The Sun lights on the ocean planet reflecting the water textures onto Earth. Would it be possible to see watery refle...
Similar to the Death Star(s) depicted in Star Wars universe, my question is how do such a massive body move from its orbit around its parent planet across the stellar system or galaxy into the enem...
Let's say I have an OCD and I want everything to be perfect. I want all the planets and The sun of our solar system to be equal in size. Apart from that, I want the distance between the orbits to b...
I hope this isn't a stupid question ("just add air"). I would like my intrepid explorers to have drilled through the ice of Europa and into the water without creating a geyser (they plugged the ho...
Setting: we have a fantasy world which is a planet with much of the same conditions that can be seen on Earth, but with the difference that it is orbited by a moon with a mean diameter of 3 500 km....
I'm interested in exploring an advanced society where electronic technology and infrastructure were not developed. What plausible natural phenomenon or context would prevent, or at least strongly d...
Imagine a big planet, gravity quite strong, 1.5 times earth. Irregular surface, rocky etc... (though flora and fauna will come into it later). It has a very thick atmosphere, drained off by a twin ...
It is said that the Moon plays a significant role on stabilizing the obliquity of Earth (or call it the axial tilt). Without it, the tilt of the planet is subject to great variations causing unpred...
I was wondering if planets die after a certain amount of time, perhaps because of decay? If this is the case, how do they die and how long does it take? Do they implode? Explode or perhaps just f...
I'm putting together a solar system for a story I'm working on, and in this solar system the most important planet is a particularly large Ice giant and its big moon nestled in the star's habitable...
Disclaimer : I'm working on the entire pseudo-science thing , so the scientific part of this whole thing isn't made up properly... Certain things have not been explained , this is to keep the post ...
I'm not sure if enough heat would be generated, but this might be a simplest way to get Mars' Magnetic field going, by crashing a large body into it (perhaps Ceres?) - and, I realize the entire ide...
I'm starting a whole new planet for a story and would like it to have an orange sky during the day. At a basic level (I am not a smart man) what chemical composition would be most conducive to Ora...
(I've tried to research this online but I'm a linguist, not a physicist, and most places that discuss this quickly get too technical for me. Simple answers will get tons of gratitude!) I imagine t...
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...
You go to sleep one day, and wake up on a different planet. Let's say the atmosphere of this planet has about the same composition as on Earth. Actually, this planet has pretty much all of the same...
I was looking a bit at the evolution of Stars and one thing I sometimes see floated is this idea that in the far flung future, when the sun has ballooned into a red giant and the earth burned to a ...
In most star systems, planets orbit around a star. Is it possible for a planet to be so massive/heavy/dense that a star(and other planets) orbit it instead? Bonus points if the planet is also reaso...
First, is it possible for a planet hit be a meteor to shatter into two pieces?. Then, can the two pieces remain in orbit? Especially, can they develop a sort of co-orbit around each other?
Linked: What would the conditions on a methane world be like? What would animal life on a methane world look like and how would it evolve? Background: Okay, an intelligent race has evolved on a...
Recently I had an idea for a world setting. A large part of this world focuses around a habitable satellite the size of Earth orbiting a Super-Jupiter. The fact that it's a moon is pretty integral ...
Related: How would a completely urbanized city-planet support its population? How a completely urbanized city-planet be maintained? Why would a completely urbanized city-planet exist? The prope...
The picture above is a representation of a Methane Earth. I pulled it from this Wikipedia article on alternative solvents. Several questions deal with whether life would be possible on a world w...
Imagine the Earth is struck by a laser/magic beam capable of piercing it and leaving a lasting hole. What effects would observed? Would there be a difference between the hole(s) being made in the o...