Questions tagged [solar-system]

For questions regarding a star and the area comprising its gravitational dominance. While they are not part of its technical definition, it colloquially refers to the planets, moons, asteroids and other bodies orbiting the star.

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Is it theoretically possible for a planet to orbit a star that is orbiting a black hole outside of the event horizon? And what would it look like? [closed]

I have written a book in which a planet orbits a star that orbits a black hole. I would like to know if this concept is completely impossible, or if it could, in theory, occur. I realize this all ...
MGJ's user avatar
  • 61
1 vote
2 answers
135 views

Highly Visible Comet in the Sky

There is a comet in my world which passes my world's version of Earth every 25 years. I'm having difficulty figuring out how to make the comet fit my requirements. Requirements: Passes my planet only ...
Fallenspacerock's user avatar
11 votes
10 answers
3k views

Permanent Full moon via "Magic"

The Problem I had in mind giving my world a permanent full moon for a long time. Though I generally ran into 2 problems along the way. Firstly I wanted of course to make it appear as if it was always ...
Fallenspacerock's user avatar
1 vote
9 answers
1k views

Can I create a world of stationary planets? [closed]

I have created this massive world composed of 15+ planets, all elevated in space, surrounded by stars and countless other uninhabited/desolate planets. Is this even possible? Do I have to create a ...
bookloverKM's user avatar
7 votes
2 answers
125 views

How close to a star could a dense asteroid belt reasonably form?

I would like to have an asteroid belt "close" to a star. I want it to contain "large" asteroids. Is this plausible? I believe the location of our real life asteroid belt is ...
spraff's user avatar
  • 2,219
0 votes
0 answers
130 views

Is My Solar System Plausible?

I have been working on and off on a worldbuilding project/speculative evolution project I want to document this Solar System's history from the beginning and essentially go into way more detail than ...
Dono's user avatar
  • 205
8 votes
15 answers
3k views

Hiding a star cluster

I have a concept involving the colonisation of a star cluster by ideological outcasts who want to be left alone. Is it possible for them to either totally physically hide this cluster (presumably ...
Valitenci's user avatar
  • 463
1 vote
0 answers
103 views

what shape would a planet entirely dedicated to watching be [closed]

If I have a planet fully dedicated to watching (think the Eye from Magnus Archives) what shape would allow for constant observation of the whole planet from some sort of tower
Overflight's user avatar
4 votes
1 answer
141 views

Could a planet be ejected from a system by a rogue planet? (possibly in a binary pairing)

Assuming an earth-like Solar System with an earth-like planet, would it be possible for a rogue planet travelling at a high speed to disrupt the earth-like planet's orbit so as to leave the solar ...
Dova's user avatar
  • 143
0 votes
2 answers
357 views

Implications of Venus and Mars having the same mass as Earth

Could anyone advise if there have been any simulations on the long term stability of our solar system if Venus and Mars both had the same mass as Earth ? If not, is this something that can be answered ...
Adrian's user avatar
  • 9
5 votes
1 answer
1k views

Could this hypothetical Super-Earth support human life?

The Question Could this hypothetical Super-Earth (Planet Y) support the lives of human settlers arriving from off world, or have I created any reasons for the planet to be inhospitable? Planet Y Star: ...
DangItBilly's user avatar
6 votes
3 answers
303 views

Plausibility of life emerging and evolving on gas giant moons?

I have been working on the setting for a hard speculative biology/evolution project that for now will simply be referred to as the Gemini Project, and the main issue I've been having is whether or not ...
LordMalecith's user avatar
2 votes
2 answers
350 views

Could a captured planet end up in the habitable zone of a new star system?

Is it possible for a planet to be ejected from one star system and end up in the habitable zone of another? Or do captured planets always end up in wide, eccentric orbits? I guess in the vast expanse ...
Elhammo's user avatar
  • 975
2 votes
1 answer
145 views

How do I make an Earth-like habitable planet tidally locked to a red supergiant (class L or M)?

Assuming tidally locked planets have the potential to be inhabitable: Is there any way for a planet of Earth-like size to become tidally locked to a red supergiant of class L or M?
Mensch79's user avatar
1 vote
2 answers
376 views

Calculating distance of the frost- and ice line

To begin, my star is a K type star with 0.65 solar masses. I've inserted my star's mass in two different templates to calculate the frost line, yielding different results (2 AU and 2.68 AU). ...
Explunky's user avatar
  • 388
2 votes
1 answer
424 views

How could an Earthlike planet have two moons, one similar to the Earth's moon and the other primarily composed of carbon? [closed]

I am building an Earthlike planet that possesses two moons, one similar to the Earth's in terms of chemical composition and one primarily composed of carbon. How could these two moons form? Which moon ...
Galactic's user avatar
  • 4,464
21 votes
16 answers
5k views

How would a civilization of techno-barbarians maintain their space ships?

Recently I've gotten interested in the planetary romance genre and the idea of a sword, sorcery and spaceships genre. So here's the dynamic is basically something like this. There is a star system ...
AllSeeingEye33's user avatar
10 votes
9 answers
4k views

What star would cause a planet to have white plants?

Okay, I'm trying to make a planet that has at least part of its surface, or at least part of its underground, habitable for humans (breathable atmosphere at a suitable pressure, a suitable level of ...
Tyson Dennis's user avatar
1 vote
2 answers
172 views

What would happen if a Europa-like moon "thawed"? [closed]

I have a planet and moon system orbiting a high mass star, something like a type A main sequence. Everything is only a short two billion years old, but the star is already starting to expand, warming ...
ScholarMoth's user avatar
2 votes
2 answers
170 views

Is a p-type binary system with two suns and two moons possible? [closed]

I want to have a fantasy setting with two suns and two moons. Ideally, the stars would be 5 million km apart, orbit each other every 10 days, and pass in front of each other every 5 days, creating an ...
marimosa's user avatar
2 votes
3 answers
618 views

How far in between a K-Type Star and a Planet would there need to be in order for there to be a very rare eclipse inside a S-Type Binary System?

Here I have posted a diagram I have made for my planet's solar system that I think may be correct. For background understanding: My Main Planet is orbiting a G-Type Star in this binary system, whereas ...
StarNagisa's user avatar
2 votes
0 answers
101 views

If possible, what would be the conditions for a planet like Earth to have an emerald green sky in its twilight zone? [closed]

Regardless, how can I get an idea of ​​how the color of starlight, or any other natural phenomenon, impacts the color of the sky at different times of day?
Storm's user avatar
  • 49
5 votes
6 answers
3k views

Is this a viable theoretical method of fast interplanetary space travel?

Let's say in the future humanity has traveled to all parts of the solar system, but they want to be able to travel between planets faster. In pursuit of this, they create massive space probes with ...
SlowlySwift's user avatar
6 votes
1 answer
353 views

What dictates whether an orbit gets disrupted or stabilised due to an orbital resonance?

Context: I've got an asteroid belt analogue situated between a Gas giant and a Super-earth. I knew about resonances, so I started calculating them and placing some of them in the belt, especially ones ...
Yulian's user avatar
  • 452
1 vote
0 answers
80 views

What would be the size of the outer asteroid belt in this system?

I am following the Artifexia-like system building with the calculator. Per the calculator, my system looks like this: I am having trouble calculating the inner and outer limits of the second asteroid ...
Irithind's user avatar
1 vote
0 answers
88 views

Jupiter's moon Europa - is it possible to colonize Europa? [closed]

So basically, I have to write a thesis paper because I'm in the last year of high school. It is an independent research project and the culminating work of my studies in school, so it represents my ...
Gabriel's user avatar
  • 11
1 vote
1 answer
91 views

How would these characteristics of a habitable planet in a triple star system affect the needed aspects of having two moons?

If a habitable planet is in a hierarchical triple star system (not unlike alpha Centauri) and has two moons but has a large torrid zone, what characteristics would my moons need to have in terms of ...
Amy May San Nicolas's user avatar
2 votes
3 answers
237 views

What adaptations would be needed for life and water around a blue star?

Of course it's very obvious that blue stars are insanely hot and would boil away most things if they got too close. BUT I'm curious if with just the right adaptations and fiddling, could there, ...
Thunderhammer's user avatar
5 votes
5 answers
576 views

If a sun were orbiting around Earth, how far away and how big would it need to be to look similar to our sun?

So in my universe, there's only a single planet, contained within a spherical shell. Orbiting around it is a dragon, holding a "sun" for lack of a better word. This sun is not a star as we ...
basklein's user avatar
  • 243
3 votes
4 answers
420 views

How To Calculate Moon Cycles To Cause A Lunar Event Every [250] Years?

My first post here, so friendly hello! I need some bigger brains than mine, or just some other braincells to reverberate off of. I have a world with three moons and I'm trying to calculate the length ...
Frankie's user avatar
  • 33
6 votes
1 answer
131 views

What elements are usually in the planets near the sun?

This is a follow-up to my original question about my planets, but this one is mostly for a different planet. Basically, I have a small terrestrial planet close to the Sun, about the size of Mercury. I'...
Silvermidnight's user avatar
8 votes
6 answers
3k views

How should I position my planets?

I'm working on a story about four planets around a star much like the Sun. But due to my (very limited) knowledge of gravity, I know that putting them too close together will cause them to collide or ...
Silvermidnight's user avatar
8 votes
3 answers
2k views

Suppose an array of mirrors 50 km above the surface reflect light straight down. How long before the sun rise are they illuminated?

Suppose at a point in the earth’s future, a superstructure has been built at the northern 45 parallel. 50 kilometers above sea level, a large array of mirrors has been built. The mirrors are ...
Irving Washington's user avatar
3 votes
1 answer
483 views

How much time would take for Venus to generate a Magnetic Field?

Supposing that we managed to speed up Venus's rotation to a 24 hour cycle in just under 40 years (how we managed to do that is irrelevant here), how much time would take for Venus to form a magnetic ...
Cruell's user avatar
  • 147
1 vote
1 answer
95 views

Is there a way to find the dates that a solar eclipse happens while Ceres is in alignment with Earth? [closed]

In the game i'm working on the Earth was hit by a Coronal Mass Ejection during a solar eclipse. I'm looking for dates between 2100 and 2300 where a base on Ceres would be protected by being in the ...
Rasip's user avatar
  • 180
3 votes
2 answers
283 views

Can a habitable S-type planet and three habitable P-type planets exist in one binary star system?

In this solar system are two stars, named Genesis and Exodus. Currently, I don't know the types because the need of habitability on the planets might affect the requirements for these stars. They ...
raevynn's user avatar
  • 335
2 votes
2 answers
371 views

How would a planet with three suns, orbiting only one work?

Okay, I am planning to make a planet that has three suns, and orbits one of them. Each of the suns has its own orbital path, so it's possible for the planet to have one sun, two suns, or three suns in ...
Tyson Dennis's user avatar
2 votes
1 answer
207 views

Would my solar system work out?

I've been building my own story world with my friend which revolves around humans and different intelligent beings, and for one of the beings, I've come up with a planet and a solar system that is ...
SaBeus's user avatar
  • 209
11 votes
3 answers
2k views

What problems, if any, does a low density cause in a planet larger than Earth in mass and radius?

I'm worldbuilding for a sci-fi setting with some help from old Artifexian videos, and have made a planet that's suitable for human habitation. However, as this planet is larger than Earth, to make the ...
Sleepysaurus Rex's user avatar
3 votes
0 answers
95 views

How to estimate the average surface temperature of a planet? [closed]

If given: Planet mass Planet radius Planet orbital distance (perihelion and aphelion) Planet albedo Planet atmospheric composition Planet atmospheric pressure Star mass Star luminosity Is there any ...
Empika's user avatar
  • 31
3 votes
1 answer
166 views

How plausible is my alien world? Hot Jupiter system with habitable planet?

The theoretical world of Hēdran is the 2nd planet of a 7 planet system. It lies within its star's (G1.4) habitable zone, but with a hot jupiter gas giant only ~1 AU away it experiences heavy ...
Austinman42's user avatar
1 vote
2 answers
160 views

Motivations for technologically advanced humans to abandon the solar system or a planet still habitable? [closed]

Let's say we are in the moderately distant future. For example, humans are technologically advanced enough so that interstellar travel is possible and Venus and Mars are terraformed. General ...
Lewis's user avatar
  • 27
4 votes
1 answer
414 views

How close the the star should i place my lava planet?

I am building a solar system with a k5v star at its center. Here are the some important stats for my star: Mass: 0.70 M Radius: 0.67 R Luminosity: 0.15 L Surface gravity (log g): 4.40cgs Temperature: ...
ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ's user avatar
4 votes
2 answers
161 views

Can I make a Binary star system with a class G star and a black dwarf?

I am constructing my own cluster of solar systems for a story I'm working on and had the idea of adding a black dwarf somewhere to indicate the timeline of this story. My question is. Does a black ...
Venik Hue's user avatar
  • 1,222
2 votes
1 answer
263 views

Is it possible for a planet to not spin around its axis?

I'm currently reading a novel where the story happens on a planet orbiting Proxima Centaury. As the planet is very close to the star, which is a red dwarf, it is tidally locked to the star like our ...
Krišjānis Liepiņš's user avatar
4 votes
1 answer
281 views

Can large stars have tidally locked worlds in their habitable zones?

I think the vast majority of space-enthusiasts has heard at some point that in order for a planet orbiting a red dwarf star to be habitable, it needs to be close enough to its parent star to sopport ...
ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ's user avatar
6 votes
2 answers
278 views

How plausible is my solar system?

I am currently working on a world orbiting around a red dwarf star (M0V to M2V, I haven't decided yet) and I need some help with designing the solar system. My original plan was having 4 planets ...
ΓΙΑΝΝΗΣ ΜΙΧΑΗΛΙΔΗΣ's user avatar
6 votes
2 answers
208 views

How would I make my Quintuple Star System Stable?

So I've been working on a star system that I want to have inhabitable planets, so by stable I mean stable on the timescale of the stars themselves; billions of years at least. So my initial plan was a ...
Ushumgallu's user avatar
7 votes
2 answers
132 views

How to make a world with very long tide cycle

I want to create a world for a story: Charybdis - a world of high tides. Very high tides. Tides that drag whole ocean around the world - or most of it - in a long cycle. It must lasts at least several ...
Zjerzy's user avatar
  • 616
2 votes
0 answers
50 views

How do I make my planet dimly lit but still habitable? [duplicate]

Currently I am making a solar system for a speculative evolution project, and I wanted my habitable planet to be really dark, while still being habitable (Preferably slightly colder of warmer then ...
Katze's user avatar
  • 569

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