Posts tagged stars
I have a homebrew setting with a moon that has some specific features orbiting an Earth sized planet, and I'm trying to find out how these features would affect how the moon looks from the surface ...
I'm currently enamored with the idea of having a species of living, sapient stars (called "astrae") as the firstborn children of the gods in my space fantasy setting. Magic exists in this setting, ...
In my story, I have a fairly advanced human race who is at the point they want to start terraforming planets. Of course, all of the materials necessary have to come from somewhere, and the proposed...
A Dyson sphere is a spherical megastructure built around a star with the goal of capturing all of the energy output of the encased star and making that energy available to the controllers of the me...
How would you contain a small star in order to draw energy from it, and power a ship? I'm thinking along the lines of a force field. I need the star visible from the exterior of the ship for aes...
It's my first time writing an original story and I have this idea, but I don't know if it could be scientifically feasible. My story would be medieval fantasy with magic, but I wanted to add a twis...
Stars generate their energy by fusing lighter elements into heavier elements. The most common reaction in Sun-like stars is the conversion of hydrogen to helium via the proton-proton chain, but hea...
I'm building up a spreadsheet on worldbuilding (Stars, Planets, Moons etc.) and i'm struggling to find an equation, or a group of equations to help me figure out the light received by a planet orbi...
I've been building a world, partly for test reasons (making sure my spreadsheet works, and so i know what i need to add to it) and partly for fun, but for calender reasons i need to know the orbita...
I'm trying to construct a habitable world which has a sun orbiting around it. I know a star can't orbit around a planet, because a star is much more massive than a single planet, which has been kno...
I'm trying to build as close to a 1:1 Earth as possible, but finding information on a non-jovian moon-based planet is extremely hard to find. I tend to ramble trying to explain things in a non-list...
The question: What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like? The life forms are human, so they Need to have access ...
The question: What characteristics are necessary for a planet to be habitable for humans? What should the generic star and planet be like? The life forms are human, so they Need to have access ...
In a world I am building, the day lasts longer than the year, 9 times longer in fact. The native people of this world have been forced to migrate around the world, both avoiding the scorching deser...
In the (relatively new) Star Trek movie Into Darkness, we see Dr. Bones and Captain Kirk in a world composed mainly of red plants. Obviously these are just eye candy with no real basis behind it, b...
I am working on a solar system for a world where I intend to place my stories. This world should work by the laws of physics as we understand them so that, even though magic is a thing that exists ...
It seems to me like one of the major obstacles to terraforming a planet is to give it a magnetosphere. In our solar system, this is accomplished naturally either by a hot iron core (for example, Ea...
I'm trying to think of ways that a habitable tidally locked planet could have something that resembles a day/night cycle. Shadows caused by any moons being out of the question. Hypothetically, cou...
Here is a link to an online animation of stars' movements in a trinary system. Basically, the three stars are orbiting around a barycenter; one (yellow in the animation, mass = 1) closer to it a...
I know next to nothing about astrophysics, but I've read a few Wikipedia articles, and it seems like a "normal" kind of binary system includes two stars of similar mass orbiting a common center. I...
I've been looking for information on this, but I haven't come upon an answer that could actually help me figure this out: Imagine a planet, inhabited by somewhat "human" beings, that has one sun-l...
I have built a star that is loosely based on a real-world star. It has the following properties: Spectral class G Mass: 1.03 M$_\odot$ Radius: 1.02 r$_\odot$ Luminosity: 1.05 L$_\odot$ Surface te...
Imagine we could open a wormhole or a jump point to a new star system. How soon would it be possible to have an accurate map of the major bodies in that system? In sci-fi, this sort of information...
If I want an Earth-like planet, what kind of star can I use to achieve that ? According to the Harvard stellar classification, our Sun is a G-class star. The best would be to have: Temperature ...
Recently, I've seen those pictures showing what Earth would be like if it had rings, and that made me wonder, what would the sky map be like? This ring would appear as a fixed object (pretty much a...
All right, so I have a game that I already made, the concept is that there are "planets" that do not move and ships that can stand still without being sucked in to the gravity of the planets. I ne...
I'm dealing with a planet very similar to Earth, except that it has two suns. So, of course, it would be an extraordinary occasion when the inhabitants of the planet see only one sun in the sky. So...
This is all about a thought experiment : Is there an hypothetical (or may it be real?) case of a stellar system, in which both methods of transit and radial velocities, are invalidated by some or...
From this chart it appears that the star types closest to our own are K-type (oranger, a little cooler, and less than half as bright) and F-type (bluer, a little warmer, and much brighter). If I w...
I'm asking for a world I'm making, which orbits a red star. According to this image, there is a star that would make the sky white. What would the sky look like during sunrise and sunset on a p...
Suppose there was a ternary system where the stars are effectively identical in mass, luminosity, radius, etc. These three stars circle a central point rather than two orbiting a larger third. At t...
Chlorophyll-a (the primary one), chlorophyll-b, and(?) beta-carotene (plus other accessory pigments / carotenoids) dictate which portions of the EM spectrum are used as energy by plants. Pla...
Location: an interstellar gas cloud Situation: an alien family stops for about half an Earth hour in the middle of the cloud to have a snack along their trip (by stops I mean they get null relati...
Part 1 On Earth, we have seasons due to our planet's tilt. In my last question, I proposed an alternative world where the seasons were instead caused by an eccentric orbit. Now I'm going for somet...
Basically, I want to create an apocalyptic event that knocks out most electricity, for a long time, hundreds of years at least. Electronic devices that do work would be extremely rare, and people e...
If there were some way (sub question: IS there some way?) to get neutron star material out of the gravity well of a neutron star, -say maybe a high-speed collision of two such stars- how would that...
It doesn't have to be a rock, in fact it would probably be depleted uranium or even some crazy material like neutronium.
This is the link of what I have in mind, https://www.youtube.com/watch?v=jKvnn1r-9Iw , can a planet rotate chaotically through this system and still be habitable? If it's going to collapse after a ...
I'm imagining if we can live on a very special white dwarf which has very special characteristics: It has cooled down to a very low temperature Its rotational speed on the equator can almost canc...
I'm looking to not tidally lock my planet, but place it between two suns that rotate around each other. The goal is to have constant sunlight on all sides of the planet and for the suns to rotate a...
Is there any feasible way to create a long-term sustainable habitat on the sun? My target region for habitation is the temperature minimum at the bottom of the solar atmosphere. Metals would have ...
So I'm working on a world that orbits a blue star that's not much bigger (or even smaller) than the sun. I was thinking that an A-type star would be a good choice for it, but it's still is closer t...
Say a terrestrial planet is orbiting two stars as if they're a single gravitational well.(I haven't worked out the distance yet as I still on the phone...) I don't need the planet to be habitable b...
What would the orbit of a planet orbiting two stars look like? Would the planet orbit the stars simultaneously or one after the other? How strong might be the gravity well of such a system be? Any ...
In some star clusters, the stars are packed as densely as a light year apart or less. Many clusters do not appear to have black holes in the center, though they remain relatively stable in their or...
I want to build a planet (or satellite) that: is smaller than Earth, has a thicker atmosphere than Earth but breathable, has neither intense volcanism, nor any extreme condition of that sort that...
I read recently that metal-rich planetary systems around large (>5 solar masses) O- and B-type stars can form enormous solid planets (potentially bigger than Jupiter) relatively quickly, photoev...
Ideally this would be some sort of sun or star-related natural disaster that would affect the entire planet and make life outside of protected/shielded areas extremely dangerous. This is a human-in...
A K2+ civilization wants to build a fission star, a huge mass of fissile material which doesn't collapse due to the radiation emitted by its fission decay. I know there are reactors like the aqueou...
Guran's comment Perhaps they are tinkering with the solar activity, turning stars into Yotta-watt, nano-bit/second beakons. (We would see the pattern eventually, but not before we looked at cen...
