Posts tagged planets
The binary stars system is comprises of a red giant with 6 solar masses and a Sun-like star, the exoplanet is orbiting in the Goldilock's zone with a molten iron core which generate a magnetic fiel...
Imagine that, suddenly, a rather large cone shaped hole from the core to the crust appeared. All the land mass of the cone just vanished. Which could be the changes that this event would produce i...
Earth's 2 poles, north and south, form a magnetic dipole that goes though the center core, and on a flat map we see the poles on the top and bottom. I have a world which consists of only a single ...
Let's say the Earth suddenly and jarringly accelerates to the point where day becomes night in a few seconds (assuming it was originally noon at the point of observation and that equal time was tak...
What would happen to an Earth-like planet if its core completely and instantly vanished? Would the planet begin to pull in on itself due to asymmetry and the empty space in the middle, or would it ...
Purely hypothetical question here. Would it be feasibly possible to have a planet entirely covered in a dense network of interlocking trees? The idea is that the trees themselves act as the 'cr...
Forget about how we get it there, some kind of top secret experiment on mars gone wrong in all the right ways. If somehow Mars's core was mixed with some amount of antimatter, and assuming 100% of...
I'm wondering if it is possible for a planet to have one pole always facing its star, the other always facing away (by rotating as if a tidal-locked planet), but style have a day and night cycle on...
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...
Proxima Centauri may have a rocky, earth like planet close to its dim sun. Tidally locked, the sun facing side may have a temperature up to 30 degrees Celsius and a dark side of -30 C. This would m...
I am asking if a planet with shades of gray only is scientifically possible in our universe. Basically everything on the surface of this planet would seem black and white to the human eye. Here ar...
Is it possible for a planet and moon to generate electricity in some way? Could a combination of magnetic fields and iron content in the crust or core produce electromagnetic induction due to the r...
Imagine you are an evil humanoid alien that wants to destroy Earth (or something awfully similar) for whatever reason. However as an alien, you do not possess any physical weapons. No laser guns. N...
Could neon or argon glow naturally in any way? What would be needed in the atmosphere? P.S. Please don't change my question?
I've asked another question about trinary planet systems which turned out to not be possible. Is there a way for three worlds to co exist within sight of each other? Sight being defined as making ...
I have three planets. Let's call them Un, Deux and Trois. Is it feasible for all three to be orbiting one another, close enough to be seen clearly by eye? All three are large enough to be earth eq...
So we harness energy from the sun using beams, right? Well what if we were to harness energy coming off the moon the same way? For those long winter months when the sun is rare we could use this to...
Pluto is inclined in a way that makes it slightly off the orbital plane of all the other planets and sun. Could you have a planet that was inclined at 90 degrees, or at least close to that? What wo...
I was imaging a system which has a black hole, a star and Earth like planet. The star and planet orbits around the black hole, but the planet has same orbital period as the star, which is a "quasi ...
After reading a couple dozen entries about rogue planets and their implications (for those unaware, a rogue planet is a planetary mass that has been separated from the star by gravitational instabi...
You see this little planet? Is a planet roughly the size of earth, just slightly smaller circumference by 50 kilometers and a smaller gravity of 0.8g with little variations around the world, just l...
I designed my Kepler Bb planet to have 4 major moons. They each have a differing trajectory and are in resonant orbits for stabilization. I also designed the planet to have earth gravity but be big...
The planet is a Super-Earth with 1.839 Earth masses and an average surface temperature of 180.7 degrees farrenheight, the atmospheric pressure is 50 times more dense than Earth's and there's large ...
I was wondering what is the smallest a terrestrial planet can be and maintain plate tectonics and generate a magnetic field, atleast to Earth's current age?
I'm looking to create a world with a predefined "once every X years" type of event, I realized that something like a comet would work for this purpose in terms of events but I need a planet with an...
After reevaluating my sense of perspective on sublight interstellar travel, I'm thinking of moving my planet closer to Earth to cut down on travel time and fuel costs. However, the planet my coloni...
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...
As the question asks, what would happen to the Earth if its core collapsed? Now I don't know if this is something that is possible or even realistic, but I found the question interesting nonetheles...
I am writing a science fiction short story, which is loosely about terraforming. The drama takes place on a terraforming site, which has been halted, in its early phases, due to the discovery that ...
Suppose an intelligent species evolved on a large rocky planet, one with sufficient mass that the species had little hope of developing anything anytime soon that could achieve escape velocity. The...
Assuming we had a gas giant instead of Mars in our planetary system. Everything else stays the same. Which long-term and short-term consequences for life on Earth would I have to take into account?
I was told to ask more impractical and unrealistic questions in the world building SE community, so here's my question. Say we have a hypothetical solar system that we want to destroy by separatin...
I have a binary system in which my world orbits one of the stars, not the pair, in the habitable zone. The stars are relatively close together (because I want the secondary one to shed significant...
Consider an Earth like planet is orbiting around a Sun like star, it is almost identical to our Solar system, except the orbital inclination of the planet is 90 degree to the equator of the star (n...
The Hollow Earth theory is/was a pseudoscientific idea that our world is actually on the inside of a large sphere. The "sky" points inward towards the center, where the "Sun" (a light source) is, w...
I wrote a novel based on a human civilization that lives floating cities and dirigibles on a small, atmosphere-abundant super-Earth with a liquid water core (there's a smaller solid core under that...
You are a planetary engineer from a lonely species fairly high on the Kardashev scale. Although your species has wandered throughout the galaxy seeking out new life and civilizations for thousands...
Let's say that planet X with a gravity similar to Earth increases its gravity by a certain amount. The increase is great enough to make living conditions difficult or impossible: for instance, the ...
After reading The Ellimist Chronicles by K.A. Applegate, I wondered what conditions would have led to the environment found on the planet "Ket" featured in the story. Ket has the following properti...
Specifically, could new planets form around a previously destroyed star? (Think of it like a phoenix.) If so, could the potential sentient life detect that their star previously exploded?
The story situation is that a generation ship is headed to another solar system where there are several planets in the star's habitable zone and once the ship arrives, it will approach these planet...
I have two planets that are the exact same size and mass of Earth. They orbit each other, and have an orbital period of one day. How far apart are they? The planets both orbit a star the same as t...
My binary planets are roughly the size of earth and they are tidally locked with one another. Both planets support life. If the day/night cycle is roughly 100 hours (50 hours of day, 50 hours of ni...
I have a captured planet/moon orbiting HD 37124 c, known as HD 37124 c m XVIII, and I was wondering: since the moon has 1.7 Earth masses, 1.1 Earth radii, a density of 7.038 g/cm^3 and a gravitatio...
In Halo series there is an intelligent race called Unggoy that evolved on a planet caled Balaho orbiting a blue supergiant called Tala, I would like to know if it would be possible for an intellige...
Earth is overpopulated and needs somewhere to create a settlement. If they decided to settle on Saturn's asteroid ring and If the people who are making the settlement have the technology we current...
Assume that the atmospheric concentration is still the same 78.09% nitrogen, 20.95% oxygen etc, except now just as dense as the Venusian atmosphere. Would humans be able to survive in this atmosphe...
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...
Could life originate on planets outside the circumstellar habitable zone (CHZ) where there is very little exposure to sun (like Uranus). If so what kind of energy source would they depend on. Coul...
The game Rodina features four planets, all with different colored skies. For some reason, the sun is a different color from each planet's surface (use this guide for reference). The four planets, ...
