Posts tagged planets
I'm trying to make a trinary star system but I'm not sure how it would work. The primary star is an M0Ve star (red dwarf flare star). The orbits of the other two stars are slightly more complicated...
I am envisioning a very big planet that at the equator Is mostly composed of gases. Further away from the equator a crusts forms of matter - rocks that then also contains an ocean. I am still imagi...
How large could a solid planet be (in theory) without becoming a star or black hole? Too much in the way of light elements would lead to thermonuclear ignition, but too many heavy elements would ev...
I am currently working on a piece that has a planet (about double the size of Earth). It is worth noting that this is a low density planet. Without any other factors (Earth-like atmosphere, same pr...
Think of a giant hemispherical shell, constructed of spaceships, sitting just far enough from Earth to be too far for Earth-based defences and close enough to effectively cast a shadow on the entir...
In the event that both planets of a binary planet system were life supporting, and both ended up developing a sapient, tool using species, at what technological level would they be able to start ef...
I am a scriptwriter working on a science fiction story. As best as I can I like to reconcile my imaginary places to within the constraints of reality. Here is my problem: Kettrah Kettrah is by m...
I'm working on a story where the characters are stranded on a planet that turns so incredibly slow that it acts like a tidally locked planet, with one side burning and the other frozen. However bec...
So I'm writing a book and need help to better explain this island that sinks, more on that in a moment as I give you the basic build of the planet... First, its a world on a very tilted angle. the...
To my understanding, part of the reason life is able to exist on Earth besides its ozone layer is due to its magnetic field, which protects the planet and its life against solar winds and keeps the...
Because our moon is tidally locked with Earth, then the same half always faces the Earth regardless of where the Moon is in its orbit. As such, would a tidally locked satellite such as our moon (as...
I would like a earth-moon system like Pluto-Charon (but with earth instead of Pluto) where both will be tidally locked to each other within something like 3 billion years (before complex life appea...
Epimetheus is a planet with about three times the mass of Earth orbiting a sun-like star in the Andromeda galaxy. However, two major factors separate Epimetheus from Earth. First, it has a thick at...
I'm using Kapteyn-b for a story, which orbits its red dwarf star every 49 days. It's almost 5 times larger than Earth, though I've made a couple changes to the observed data to make it more plausib...
I'm working on a planet and I want to know what is the maximum amount of sunlight my planet gets in lux (for Earth It's 120000 lux). My planet orbits an M4V class red dwarf that has a mass of 0.2...
What would be a good way to explain dangerous winds on a rocky planet like mars? I'm looking to create a dangerous situation for atmospheric pilots trying to land, specifically for sudden changes i...
I want to create an earth-like planet with massive aurora, visible during the day, and from the equator. How would I go about doing this? Do I increase the strength of the planet's electromagnetic ...
I'm designing a habitable earth-like planet that has oceans, forests and life. Now this planet is a bit larger in diameter than earth but its mass and therefore its gravity is a bit lower. This low...
In the Halo series there's a habitable planet called Harvest with a diameter of 4,012 kilometres, and gravity 99% of Earth's, though the planet only has 9% of Earth's mass. If such a planet is poss...
I am designing a solar system, with the first planet located very close to the parent star. This planet has become tidally locked to the star. Is it possible for to have a molten lava ocean on the ...
Allright, what i'm asking is how life would be like on Earth (which pretends Earth could develop life in the "short" life of a blue giant) if we had two blue giants in the sky instead of the Sun?
In the book 2010: Odyssey Two by Arthur C. Clarke, Jupiter is turned into a star. Presumably this is done by making it more dense, so if Jupiter were to reach that density and become a star, what w...
Let's say I have a binary star system. The planet is orbiting the smallest star similar to the Sun at 1 AU, the same Earth-Sun distance. The other star is located at around 50-100 AU from the Sun...
Ok so first of all, let's imagine a civilisation on a planet. The planet has a relatively low escape velocity, say 6 km/s and maybe an atmosphere 30% - 50% the thickness of earth's atmosphere. Now...
This blog post about binary-star systems points out that, rather having the stars be close together, they could be far apart and a planet might orbit just one of them. It gives the example of the ...
I'm aware that 'tatooine' worlds don't make good habits for planets, normally. From what I've read, either a planet has to orbit one star really closely, or orbit both stars from a really long dist...
I have two tidally locked planets of roughly equal size (about the size of Mars) orbiting each other around a barycenter equidistant between them. They complete a day-night cycle every 72 Earth hou...
Just for curiosity, I am a diabetic and I was wondering if humans would suffer from the same ilness if they were on other planets? Does the climate on other planets help the immune system? Will the...
In my fantasy universe, there is a disc-shaped world that has a flat surface that has roughly the same atmosphere as Earth (see this); the atmosphere moves along with the world. There is no gravity...
I realize that many factors affect this answer so assume the following: Star type: G2 star (like our Sun) Composition: O2, N2, CO2, H2O atmosphere Magnetic field: Two different magnetic field str...
I was reading up a little while ago about Janus and Epimetheus and how every few years they trade orbits. The mechanics is interesting but I'm not going into them here. What I was wondering is ...
I'm writing a JRPG-inspired novel set on a planet with 1.7 Earth masses and 1.4 Gs, but is it possible for life to even develop on such a high-gravity planet in the first place? I tried scouring th...
Suppose a K-II civilization built a terrarium or zoo, featuring life and ecosystems from different worlds as it travelled through the universe. (By K-II I mean in terms of resources and energy bud...
Can a habitable planet have two separate crusts, both of which can sustain life? I am wondering if through the planet's creation, over time through some form of mantle cooling/erosion combination, ...
I have a scientific research vessel that is exploring an alien galaxy. I would like this vessel to detect and then explore a planet that was not previously known about, which means it (or potentia...
A highly advanced civilization has developed and is about to ascend to become beings of pure energy in a hyper-dimensional universe. Before leaving they restore our universe to a reasonably pristin...
Let me clarify on the title, because this is important. In recent years, people have been feeling less comfortable calling the only natural satellite orbiting Earth a moon. It may not be the larg...
I am writing a novel. In that novel, humans have settled a tidally locked planet. That planet is positioned at just such a distance from its sun that the sun heats the planet to an average of 25 °...
Looking into fleshing out my world story. One of the things I had in mind was an infrequent but consistent shipment of supplies to a planet from Earth. For simplicities sake, we'll use 10 as the nu...
My planet - let's call it Penumbra for now - exists at roughly 1.5 AU from it's sun - which was similar to Earth's - but is about a billion years older. It is 15% more massive than Earth, but near...
I'm currently in the midst of a trilogy of novels. The planet is a swamp world with $.87$ g's of gravity, no axial tilt, $15.12$ psi atmospheric pressure, and whose mass is $.92$ of Earth. Atmosph...
I want a planet that is twice the diameter of earth's but has very similar gravity, atmosphere, and day length. Would doubling the rotational speed of the planet meet these parameters without notab...
My story takes place on an Earth-like, inhabited world that is far larger than Earth, has roughly 110% of Earth's gravity, and has unusually high (and generally unexplained) EM emissions permeating...
A futuristic entrepreneur wants to start a cruise line company and needs to build a cruise ship that will not only float on a gas giant, but be habitable throughout a 7 day trip (for the uber-rich ...
Inspired by comments to JBH's answer to The worlds between, the consequences of instantaneous FTL. The Premise A technology for instantaneous travel exists, making it possible to travel to any po...
I have a huge planet with two continents separated by a wide ocean. Inhabitants think that their continent is the whole world because the other side is too far and they never visited it. What if pe...
I am trying to develop an alien species that could live on Titan and at first I supposed it would be easy with the species being able to use yellow, red and near-infrared wavelengths of light to se...
This question is kind of hard to explain succinctly, and I apologize for that. Obviously, humans experience acute effects from UV light on Earth in a matter of minutes near the equator (UV index o...
I want to write about a planet that has a high average temperature, but low enough to be comfortable. Just because of curiosity, I would also like to know the lowest comfortable. Additional Info:...
Are Trojan Planets Possible? Are Habitable Trojan Planets Possible? A Trojan relationship is when an astronomical object A is orbited by astronomical object B, and a third object, C, orbits A at ...
