All Questions
66 questions
2
votes
1
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61
views
Where would this star's habitable zone be in AU?
I am making a hypothetical solar system. I want to know where the star's habitable zone would be located (in AU). Here are the characteristics:
Star name: Undecided
Star designation (preliminary): ...
- 83
4
votes
2
answers
2k
views
Is this solar system mechanically possible?
Say, hypothetically, you have two terrestrial planets (b,c), one gas dwarf(d), and one gas giant(e) all orbit the habitable zone in some manner.
b, c, and d all have an orbital resonance, which cause ...
- 83
12
votes
5
answers
7k
views
The rotation of the sun's core doubles in speed every 10 years. How many years before the situation turns apocalyptical?
I'm asking this because I'm writing a fictional story where I need a doomsday scenario that means humanity must escape the earth. The timeframe that would fit the plot of the story would be in the ...
6
votes
1
answer
246
views
How to calculate the expected rotational speed of a star
I am working on fictional stars, and I want to have as many points about them as I can, and most things I found relatively easy, except for rotational speed.
I am not sure exactly how to find at what ...
- 589
0
votes
2
answers
112
views
Auroras of a planet around an active M7 red dwarf
A planet the size of earth around a pretty active M7 red dwarf (think of M to X level flares almost every day) has a decent magnetic field of 0.5-0.8 Gauss, orbiting at a distance of 0.0443AU, with a ...
- 154
4
votes
4
answers
2k
views
Frozen Star- Red dwarf goes supernova, just because I froze it?
So as I mentioned in my previous question in the series, the parent red dwarf star of a one-planet system, Eridanus, has frozen over due to an unknown reason. By a "frozen red dwarf star", I ...
- 3,422
7
votes
6
answers
2k
views
How can I figure out measurements/distances and hyperspace jump time in my universe that is simple enough for readers to understand?
I'm using an alternate version of the Milky Way as my setting. I need to know how far it is from one planet/area to another, and know how long it takes to jump via hyperspace -- Yes, I realize ...
- 1,456
26
votes
4
answers
6k
views
Would extracting hydrogen from the sun lessen its lifespan?
Relating to my earlier question Is it a good idea to harvest the sun to terraform Venus?
Suppose that we continue to “mine” the sun for hydrogen to be used as rocket fuel. If we continued to do so, ...
- 8,691
6
votes
2
answers
253
views
What would an eclipse with a translucent crystal moon look like?
What would an eclipse with a translucent crystal moon look like?
In one of my worlds, a special moon orbits the planet — it's made of a translucent crystal, blocking only 80% of the incoming light. It'...
- 3,709
3
votes
1
answer
549
views
Replacing the sun with an type A star (Fomalhaut) in a fantasy solar system where there is an habitable planet
Lets says there is a planet in the goldilocks zone of a type A star (luminosity of 16 and mass of 1.9 (like the star Fomalhaut))
How far would the type A star need to be from the planet and how would ...
- 632
3
votes
1
answer
189
views
How fast would strangelets travel in space?
At what speed would strange matter travel in space after being ejected from a neutron star merger? I have searched around online but I have not found an answer.
- 39
0
votes
3
answers
237
views
Is this scenario possible? How can it be done?-Dyson sphere replaced by gas giant star
Scenario:
"...Regino is a gas giant approximately the size of Saturn, and three moons, Reo, Gei, and Tan orbit it. All three are small, rocky bodies a half to a quarter the size of Earth's moon. ...
- 587
8
votes
2
answers
413
views
Time scale and mechanism to “realistically” remove Sol from the Milky Way
What is the fastest rate a star could be flung out of our galaxy and by what mechanism(s)? (i.e. from a gravity kick by a hypothetical passing hypervelocity black hole)
Secondary question: how far ...
- 81
2
votes
1
answer
531
views
Climate of a Planet in a Binary Star System
Would the climate of a planet in a binary star system consisting of a K star and a G star be affected by the binary system? By this I mean, does having two stars at the center of a solar system affect ...
- 258
5
votes
2
answers
273
views
Maps of star clusters
Inside star clusters, there are regions where stars are within 1 light year of each other. I wish to create a sci-fi setting in one of these regions. To start, I have tried to find maps/charts of ...
- 51
4
votes
3
answers
418
views
Could there be a star where humans could survive for a short time?
This honestly sounds like it's basically impossible, but here we go anyway.
We've picked up a strange reading from a spot orbiting a star in a system elsewhere in the Milky Way galaxy. We've come into ...
- 3,540
2
votes
1
answer
101
views
Rocheworlds mass
Suppose you've got two tidally-locked planets, each one orbiting its own red dwarf. With two red dwarfs to hold the planets, could the planets get close enough to share atmospheres? And how would you ...
- 438
13
votes
3
answers
2k
views
What would a Rainbow look like on an earth-like Planet orbiting a Red Sun?
Okay, so in my setting I'm writing, the planet is very earth-like, similar atmosphere, liquid water exists, etc.. But the planet orbits a red giant. I've done a lot of fiddling around with various ...
- 149
0
votes
2
answers
172
views
Would an elecroweak star radiate similarly to a normal star? If so, would a habitable zone around it even be possible?
An electroweak star is a theoretical exotic star in which the radiation pressure from its core keeps it from collapsing into a black hole. Because of its theoretical nature, it's hard to find a lot of ...
- 19
4
votes
0
answers
53
views
Equations for developing a hypothetical Solar System [duplicate]
I am currently going down the rabbit hole of writing a story but I would like it to be set in a universe which is believable. Therefore I am trying to create a hypothetical solar system in which the ...
- 101
7
votes
9
answers
868
views
How to make other stars visible to the naked eye in the day sky
In my world each person has the ability to call upon the power of a star; using it to further whatever end they’d want—i.e. using the sun’s energy to power a spell. However, they can ONLY call upon ...
- 73
-3
votes
1
answer
150
views
What is it like inside the sun? [closed]
In a freak chance of events, a spaceship is stranded in the sun, and the crew and ship is miraculously unharmed. After an attempted suicide, the crew realizes that through the same chance that put ...
- 5,710
9
votes
6
answers
796
views
Could a mass made up of certain elements or compounds "disrupt" a star?
Inspired by this interesting question-- let's say that the universe was just really, really out to get a particular star, such as our sun. Is there a perfect cocktail where a mass significantly ...
- 1,084
-2
votes
1
answer
128
views
Binary star system i need help finding habitable zone [duplicate]
I have revamped my queshton a 3th time so i can get my ansure. The last 2 times i forgot something or got my math wrong. so i hope i got it all and got my math right, third times a charm. I have a ...
- 83
1
vote
1
answer
165
views
I need help with the math of this Binary star system [duplicate]
I have talked before about this system in one of my other questions. I have figured out some more info about the planets/stars. I want to know where is the habitable zone and any other info you can ...
- 83
3
votes
4
answers
361
views
Can a planet orbit two stars, the first sun being like Earth's Sun, the second and larger star only visible from the planet around the horizon?
My planet orbits two suns. The orbit of the first sun is similar to Earths orbit around our sun. The orbit around the second sun however makes it appears only around the horizon. Is this possible?
- 391
0
votes
1
answer
130
views
Plausibility of "diamond"-like crystal and/or mineral substances forming on a planet orbiting a dwarf star
Alright, so the primary inspiration for this is 55 Cancri e, the speculated carbon "diamond world" and to a degree, Nkllon, a planet in Star Wars that is essentially what Cancri is, but "confirmed" to ...
4
votes
3
answers
316
views
Use bomb to detonate a white dwarf?
Suppose there is a Sirius A based alien civilization, but their planet is heavily defended, so direct attack is useless. Could we use some kind of weapon to detonate the Sirius B and cause a disaster ...
- 61
8
votes
2
answers
303
views
Can I arrange my stars in a tetrahedron?
Inspired by this question:
Consider a trinary star system, in which the three stars are arranged in an xy plane and all revolving the same direction, equidistant from each other. The inward pull of ...
- 12.2k
4
votes
1
answer
411
views
Explaining a Low-Mass Brown Dwarf
Considering the well-established relationships between stellar mass, surface temp, and luminosity, how unusual would it be to find a star (or brown dwarf) that possesses about half the mass of an ...
- 103
19
votes
6
answers
776
views
Can my spaceship figure out its position using Cepheid Variables?
In my story, reasonably far in the future, an intrepid group of explorers are on the first manned mission to the Andromeda galaxy, travelling close to the speed of light. They slumbered in suspended ...
- 102k
14
votes
3
answers
1k
views
How to estimate a star's heliopause?
Is it possible to calculate/estimate the size of a star's heliosphere? If so, how?
I am working on a semi-near future, sci-fi novel. As part of the technology base, humans are able to travel between ...
- 5,047
1
vote
4
answers
138
views
Optimal arrangement for habitable zones?
So, here's my issue.
My setting's central conceit is that a myriad of human societies developed at relatively concurrent times across a large system separated by only a few light-hours. (There are, of ...
- 439
6
votes
1
answer
166
views
Can I see my secondary star?
I have a binary star system and have come up with some stats for it.
My primary star is an F-type, with a mass of 1.3 sols and a luminosity of 2.197 sols. My secondary star is a K-type, with a mass ...
- 489
14
votes
2
answers
669
views
What would happen if 10^37 J of energy was dumped into the sun via antimatter detonation?
My first post here, and it's more about destroying worlds than making them.
Consider this scenario:
An earthlike planet where a powerful magic spell has been cast, protecting all positrons from ...
- 361
-1
votes
2
answers
419
views
Neutron star "evolution", how do neutron stars die? [closed]
According to this Neutron Stars start out composed of the same material as White Dwarves, combinations of Helium, Oxygen, Carbon, Neon, Magnesium, and possibly Iron before undergoing gravitational ...
- 51k
3
votes
5
answers
335
views
Is my celestial coordinate system efficient?
I want to know whether or not my starship's cordinate system is efficient or not. Soon after my race flew into the stars, we realised we needed to be able to tell where we were. We need coordinate ...
- 33
6
votes
2
answers
336
views
Do stars in a binary star system fall along the ecliptic?
I am wondering about Tatooine, and was reading about binary systems here, which provided a lot of good basic food for thought. My specific question is not addressed at that link, and so I pose it here....
- 3,833
4
votes
9
answers
467
views
Force Field Contains a Star
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 ...
- 53
9
votes
2
answers
647
views
Radiation from binary star systems and how that would affect a planet orbiting both stars
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 in ...
- 554
6
votes
3
answers
194
views
Can a moon cycle accelerate periodically?
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-like ...
- 289
5
votes
2
answers
428
views
How can I find local stars that are 'gravitationally bound', i.e. moving together?
Within our local region of space are several hundred/thousand stars. I had long ago found some pretty good resources and made a starmap (using YGraph and some star catalog datasets I got from Nyrath, ...
- 381
8
votes
6
answers
1k
views
Would alien litterbugs accidentally create a star?
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 relative ...
- 301k
13
votes
3
answers
2k
views
Can twin stars be born?
Stars are born through the fusion of light atoms and the star's nucleus. So let's say that as a star is being born, the nucleus split and creates two stars. Could this even happen? If so, would the ...
- 191
5
votes
5
answers
349
views
What conditions would an A-type star need to have a blue color?
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 to ...
- 1,430
8
votes
3
answers
559
views
Would ripping the core from a Sun-like star cause it to explode?
I'm well aware that a Sun-like star is incapable of producing a supernova at the end of its life. However, would removing the core or a fraction of it, trigger an explosion from the star collapsing in ...
- 6,756
1
vote
2
answers
239
views
VY Canis Majoris planetary system
Since the Sun is the only star we know to have life in its planetary system, I came to wonder about if it was replaced by, say, VY Canis Majoris How far would we have to be so that we would still be ...
5
votes
2
answers
570
views
Can we use the Sun as an interstellar signal lamp?
Earth, present time or very near future. Astronomers have just announced that it is believed that almost 9 billion habitable Earth-like planets exist in the Milky Way alone (this is true, but there is ...
- 2,902
18
votes
2
answers
1k
views
Massive planets around an old blue star
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, ...
- 1,768
2
votes
0
answers
76
views
Is it possible to have a stable ternary star system? [duplicate]
I was thinking, and I came up with an idea. Have three stars of equal mass orbiting a single point, with all stars in the same plane. But is there any way to make this possible? If not, is there a way ...
- 7,026