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.

Filter by
Sorted by
Tagged with
7
votes
1answer
881 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 ...
5
votes
5answers
191 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
votes
1answer
111 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 ...
1
vote
1answer
99 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 ...
-1
votes
1answer
83 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
votes
3answers
826 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. (...
7
votes
1answer
566 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 ...
1
vote
1answer
83 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(theta))^2, where theta is incident angle. I have a gas giant with a ...
1
vote
1answer
77 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 ...
3
votes
2answers
155 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 ...
1
vote
2answers
76 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 ...
1
vote
0answers
33 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. ...
10
votes
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 ...
7
votes
3answers
673 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 ...
-1
votes
1answer
41 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 ...
6
votes
2answers
198 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
votes
2answers
184 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 ...
0
votes
1answer
91 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 ...
2
votes
3answers
86 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 ...
10
votes
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 ...
7
votes
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
votes
2answers
189 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
votes
4answers
112 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 ...
4
votes
2answers
202 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
votes
2answers
232 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 ...
1
vote
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
votes
1answer
125 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 ...
0
votes
2answers
89 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 ...
5
votes
5answers
136 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 ...
0
votes
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 ...
1
vote
4answers
452 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 ...
1
vote
3answers
90 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 ...
0
votes
2answers
105 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 ...
1
vote
3answers
125 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 ...
5
votes
2answers
342 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 ...
10
votes
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
votes
2answers
424 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 ...
4
votes
1answer
127 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 ...
1
vote
4answers
140 views

Would it be possible for a planet to have a northern or southern sunrise/sunset [closed]

I was curious, if it would be possible for planet in any star system to have sunrise in the northern or southern pole due to the orientation of the planetary magnetic field?
5
votes
1answer
186 views

Could this planet's tail be visible?

I have 2 planets, a hot Jupiter with a standard majority Hydrogen/Helium atmosphere (Ab) & an Earth-like planet(Ac) orbiting around an orange dwarf star (A) which is very similar to Epsilon ...
5
votes
1answer
181 views

How realistic is this orange dwarf star?

For my world building project, I have an (on the large side) orange dwarf star with these parameters: Mass: 0.75 solar masses Radius: 0.8 solar radii Luminosity: 0.36 solar luminosities Surface ...
5
votes
2answers
152 views

Harvesting Antimatter from Solar Flares

An old NASA news article I came across states that a solar flare observed in 2002 produced around a half-kilo of antimatter: https://www.nasa.gov/vision/universe/solarsystem/rhessi_antimatter.html How ...
3
votes
1answer
105 views

How Big Can the Habitable Zone Be in a G-Type Binary System?

Here's the basic setup: There is a binary solar system somewhere in an elliptical galaxy (said to be more suitable for habitability than spiral galaxies like our Milky Way.) The first star is a G-...
8
votes
1answer
120 views

Engineering a microorganism capable of functioning under cryogenic temperatures

I'm trying to design an artificial microbe that could survive in the crust of icy moons and dwarf planets in the outer solar system, such as Pluto and Triton. I'm thinking of making them hydrogen-...
4
votes
2answers
152 views

Would a spherically distributed solar system inevitably become flat, i.e., develop a plane of the ecliptic?

Notes I have tagged this as hard science - If it turns out that current science has no research on the subject or cannot cope with calculations about this sort of ...
3
votes
1answer
98 views

What would a ice planet in carbon-rich system look like and be composed of?

What would volatile-rich planets like Pluto, Europa, Ganymede or Titan look like in a star system with a high C/O ratio and what would they be composed of? As water cannot form in carbon-rich systems ...
6
votes
8answers
353 views

Could a planet with many moons see a different moon each night?

This is just an idea I have been toying with. Taking Earth as an example with 7 days in a week, my idea would that there would be 7 moons in orbit around the planet. They would not necessarily share ...
4
votes
0answers
48 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 ...
5
votes
3answers
214 views

Ice moons and giants? That close to the sun?

As a world builder I like to make solar systems and sometimes when I see an interesting idea I can’t help but wonder could that actually work that way? For an interesting example here is a clip from ...
3
votes
2answers
196 views

Replacing Jupiter with a small star

Earth orbits between the Sun and the massive planet Jupiter. My question involves a similar set-up except that Jupiter is replaced by a small star. Here's a size comparison between Sol, Jupiter, and ...

1
2 3 4 5 6