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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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6
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3answers
103 views

How big of a problem would UV radiation be for colonists around a main sequence blue star?

I've settled on using a blue star for my setting. It'll probably either be a small B or large A-type main sequence star, somewhere between 2 and 4 solar masses. There is one relevant planet. I've ...
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1answer
66 views

Would This Solar System Be Stable?

The question isn't whether this system would be natural or artificial--it'd work either way. At the center of this solar system is a binary of yellow dwarves, each one rated F5 (120% the diameter, 130%...
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2answers
222 views

Stellar/planetary configuration to maximize number of solar eclipses

On Earth, the planet has a single moon and a single sun. And as long as the moon stays within a certain proximity of Earth (apparently, it's slowly drifting further away), a total eclipse occurs at a ...
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2answers
87 views

Could neutron flux from a hotter primary star/keep a brown dwarf burning?

Brown dwarfs are the smallest class of star ranging from 13 to 80 times the mass of Jupiter, 0.01-0.08 solar masses; it is thought that they are stars only because fusion reactions involving hydrogen'...
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6answers
305 views

Could an Irregular Orbit Cause Significantly Longer Seasons?

I have a fantasy world I'm making, with a planet and sun similar to our world, except the length of the seasons are significantly longer. Each of the seasons last two years, and the full seasonal ...
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2answers
87 views

Lasting spectral trace from funeral rites

So burial in space has been a thing in more sci-fi properties than I can count, and I've always wondered how long evidence of such a practice would last. In interstellar space there is little to ...
2
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1answer
75 views

Does this F-star solar system make sense?

The setting for the narrative project me and my team are working on is a solar system with centred by an F-star 1.3 to 1.32 times more massive than the sun aged 2.5 to 3 Billion years. Here is how the ...
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3answers
88 views

Is this habitable moon formation scenario plausible?

My and my teams' works take place on a moon orbiting as giant about 3 times the mass of jupiter (possessing also a massive moon system) in a solar system with an F-star and be either the first, third ...
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4answers
631 views

Is it possible to create ice on a planets equator using planetary rings?

I was looking into creating a planet with an icy ring around the equator while also having ice at the poles and bands of warm/tropical areas in between. The way I thought to do this would be having ...
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2answers
244 views

Is there a mathematical way to calculate the density, volume, etc of a planet just using mass as data?

while I was working on the language I was thinking about the planet and I don't have the mathematical data, I have a fairly done map but not the data and it would be interesting to add it. As data I ...
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1answer
241 views

How would a near light speed impact on Jupiter affect the planet and the solar system? [closed]

The object was originally "fired" as a weapon used from space to hit planets.let's say it is a long cylinder with a very high density and it was accelerated at some point to 90% of C. The ...
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1answer
1k views

Trying to survive a passing neutron star by burrowing deep in the planet's crust?

Situation: My colony is threatened by a passing neutron star. It turns out this planet is part of a binary system and once every several hundred years it passes by a neutron star, which irradiates its ...
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1answer
893 views

What would happen if the sun shrunk by 25% in 2000 years?

The big bad vilain is stealing energy from our sun. He has been doing this for 2000 years and the sun has already shrunk in mass by 25%. What are the effects on our earth. From what i found here and ...
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5answers
208 views

Is there a way for a permanent Lunar eclipse, or another Object to always be in Earth's shadow?

I have a question regarding worldbuilding and haven't found a question like this yet, so I created an account and hope that someone can answer it :D As a starting point, imagine our real-life Sun, ...
3
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1answer
123 views

Damarian's Parameters: What are they?

For Damarian, I have its system starting to be worked out, and I even have the basics of Checuti and how Damarian orbits around its mother planet. (Link to my first question about this system is ...
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1answer
119 views

How long should a Life-Harboring Mega-Moon's orbit around its Mother Planet be?

Damarian, the world I'm building, is the largest moon of its gas giant planet, Checuti. Damarian's diameter is 19,113 km, but its gravity is nearly the same as Earth's (It' largely made out of a ...
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1answer
88 views

A Hyperadvanced Civilization Had Created a Solar System From Scratch. Would the Specified Details Work?

Yes, you read that title right. A "hyperadvanced" civilization, an alien race with technology so advanced that we humans can currently dismiss it as alien-space-bat-magic. At the center of ...
11
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3answers
843 views

What are the atmospheric/planetary effects of having no solar wind?

Suppose we have an earthlike world orbiting an artificial star which produces light but no solar wind. I would like to understand the implications that a lack of solar wind would have for the planet. (...
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1answer
576 views

A universal formula to predict which gas can or cannot stay within bound of a natural satellite or planet?

Given the following graph: , Relations exist among the escape velocities, molar masses of gases and the masses of natural planets and satellites. Is there a general math formula where inserting a ...
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2answers
138 views

Light reflecting off a gas giant onto its moon

Okay, thanks to Ash, I know how to calculate the percent power of light hitting a planet at various angles. It is equal to cos(θ)2, where θ is the incident angle. I have a gas giant with a radius of ...
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1answer
82 views

Predict The Orbital Eccentricity Of A Planet In A Circumbinary Orbit

Okay, I have a planet smaller than Earth that has a mean orbital radius of .9 AU, and it orbits twin suns. The larger sun has a mass of 1.15 solar masses, and the smaller sun has an mass of .45 solar ...
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2answers
209 views

Minimum Safe Distance From Planet-Destroying Event

Okay, I have this villain who's able to create supernova-like explosions from his body that release a total energy of 1.67x10^39 J, and the heroes stop him from destroying Earth by portalling him away ...
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2answers
78 views

Possibility of Life in a solar system given these conditions?

Scenario I’m creating a fictional world and I wanted it to be semi-realistic and I’m starting out by creating the Solar system and while I am no astronomer I did some research and found that K-type ...
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0answers
34 views

In this infant (<500 million years) solar system, how far would each orbit be to be stable?

Here's the story: There is a solar system that is still a baby, less than 500 million years old. There are a total of eight stars clumped into four binaries, each one with its own habitable zone. ...
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10answers
2k views

What kind of catastrophic phenomena could cause a solar system to be wiped out with little to no warning?

It's a pretty simple question: imagine you have a solar system about the same size as our current one. This solar system is close enough to nearby colonies that most observatories can see the planets ...
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3answers
683 views

Plausibility of an atmosphere on the furthermost planet of a solar system

Atmospheres like Earth's or Mars would freeze and precipitate towards the surface if the planets were to be moved very far away from the Sun, since the light that reaches that far is incredibly dim ...
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1answer
44 views

What Kinds of Gas Giants Would Work Best in Orbiting an Orange-Dwarf Binary?

The term "gas giant" is, surprisingly, not uniform. It turns out that there are far more to the gas giants than Jovian or Saturnian. I won't list you all of them, just those that I find ...
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2answers
209 views

Influence of an inner gas giant over a solar system

I'm designing a solar system with three planets in its hot zone, two in its cold zone and three in its habitable zone. All of the planets are rocky worlds of various sizes, except for the middle world ...
8
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2answers
193 views

What would be the climate patterns on a lush life-bearing moon orbiting a gas giant in the goldilocks zone?

The moon would be similar to Earth in size and composition and the gas giant comparable to neptune or uranus. Will the periods of eclipse of the the giant have an effect on climate? What about the ...
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1answer
117 views

Would Sean Raymond's "Ultimate Solar System" Work in This Particular System?

Presented here is a system in which a binary of orange dwarves orbits a binary of yellow dwarves. Each yellow dwarf is 105% as wide, 110% as massive and 126% as bright as our sun. Each orange dwarf ...
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3answers
88 views

Can periodic gravitational tug and pull of binary star ensure that a planet stays extremely tectonically active?

There's a binary star system with a close pair of stars ( A1 V and G2 V), in which there's a rough analogue of our Mercury that orbits both of them - a planet that's supposed to be closest to the pair ...
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6answers
3k views

A Habitable Zone Within a Habitable Zone--Would that Make any Difference?

Presented here is a quaternary solar system consisting of two binary orbits. One consists of two red giants, each one 100 times as wide, one-third as massive and 100 times as bright as our sun. Both ...
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7answers
2k views

Would we see aliens on Europa?

If aliens were to bring a space ship to the solar system, and put it in orbit around a Jupiter moon, and then begin colonising the surface of the planet, what would we be able to see from using ...
3
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2answers
218 views

Maximum shell world planet size with earth-like conditions

I am trying to work out the theoretical limits on the size of a shell world (made with orbital rings constructed around a black hole). I have the following constraints: The light to the planet must ...
3
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4answers
115 views

Functionality of a horseshoe orbit around a gas giant in a binary star system

So I'm starting a book and this idea popped in my head. Horseshoe orbits are really cool and all, but what if you throw in another star. Of course it did have a reason, I want my main civilization ...
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2answers
233 views

Could Uranus have a solid surface due to its internal composition and lack of internal heat?

Uranus is the seventh planet from the Sun. It is classified as an Ice Giant, which, unlike a Gas Giant, such as Jupiter or Saturn, is composed mainly of elements heavier than Hydrogen or Helium. ...
4
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2answers
268 views

What is the minimum size of an habitable planet to have two moons?

For the sake of the question, let's define a moon as a natural satellite at least half the size of our Moon. It needs to be spherical like our Moon, not like Phobos and Deimos on Mars. The imaginary ...
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0answers
44 views

How to stabilize the tilt of a planet without heating its core from tidal forces

I saw that this question was asked here: Stabilizing the obliquity of a planet except that the consensus was that a moon is mandatory. For my scenario: What should an inactive planet's topology be ...
3
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1answer
129 views

How Many Red Dwarves Can Make One Stable P-Orbit?

Red dwarves are the most common stars in our galaxy, if not the whole universe. They are small--the largest don't exceed one-half of a solar mass--but scientists still believe in their potential for ...
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2answers
121 views

What are the upper and lower year lengths for a habitable planet of 40 Eridani A?

In short, I am asking about the range of year lengths for a planet orbiting in the circumstellar habitable zone of 40 Eridania A. Since Vulcan, one of the most famous planets in science fiction, is ...
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5answers
142 views

Dropping into a new star system: how would you set up a frame of navigational references for use at planetary distances?

My question arises from how to treat navigation within an unknown star system, based on what is in that star system. System North and South can be easy to determine - just observe the directions in ...
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0answers
66 views

Sigelon's Terrible Neighborhood

Sigelon is a mountainous world that's volcanically-active due to pass-bys with an larger neighboring planet that has a more eccentric orbit. These volcanoes release enough soot and smog to ...
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4answers
460 views

Hosting Life Near an Anti-Star

An anti-star is a star that produces energy via antimatter annihilation. As annihilation is 100% efficient at turning matter into energy, an anti-star the mass of the Sun produces 100 times as much ...
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3answers
105 views

Would it be possible to have two planets in a synchronised orbit?

Could two planets which orbit the same star have orbits which keep them at the same relative point in each others' skies throughout their year? To picture this, if the planet which was closest to the ...
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2answers
115 views

Red Sun Plus Blue Sun Equals Magenta Sky?

Okay, my second cousin is working on a story that takes place on a planet named Odroia. It is an Earthlike planet with a supercontinent similar to Pangea, that has scattered rivers and lakes, with its ...
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3answers
130 views

Perpetual Day Planet

I’d like to know if this is plausible: A habitable planet that’s always day. It kinda works like this: The planet orbits its largest sun, which is also orbited by three smaller suns that share the ...
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2answers
346 views

How much mass would my hot Jupiter lose?

Having done a bit of research lately, I learnt that hot Jupiters are often victim to having their atmospheres gradually stripped away by their parent stars. That got me thinking: Assuming a planet of ...
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2answers
2k views

What would seasons and daylight be like if the Earth was on an eight-shaped orbit between two stars?

I'm building a medieval-high-fantasy world and I want it to have two suns. I'd like it to make it somewhat realistic at least as far as seasons and light/biomes go, while the actual feasibility of ...
5
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2answers
425 views

How much of the solar system would be damaged if the earth was destroyed by lightspeed ship collision?

If a large spaceship travelling at near-lightspeed hit the earth and destroyed it, how far into the system would the devastation travel? Would colonies on Mars and Venus (and perhaps ships in orbit ...
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1answer
131 views

Is it possible to make a solar system based on an existing solar system

I've been making a solar system for my story based off the Keplar-47 solar system as my story has 2 suns like this solar system and since its easier to write a system based off a real one then to ...

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