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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2answers
328 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 ...
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2answers
401 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
101 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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4answers
128 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
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1answer
175 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
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1answer
146 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
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2answers
139 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
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1answer
81 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-...
7
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1answer
109 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-...
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2answers
146 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 ...
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1answer
81 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 ...
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8answers
312 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 ...
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0answers
47 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
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3answers
186 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 ...
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2answers
161 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 ...
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0answers
46 views

Potential atmospheric compositions given a temperature range?

I'm generating a planetary classification system for a sci-fi universe. Right now I'm basing part of it off of Sudarsky's theoretical classification of gas giants (https://en.m.wikipedia.org/wiki/...
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2answers
2k views

Life on Earth without a magnetic field?

Consider an Earth-like planet in a solar system much like ours that doesn’t have any magnetic field (or at least a very weak magnetic field) because of a lack of metals like Nickel beneath the surface....
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2answers
79 views

How far would an antimatter asteroid made inside our solar system? [closed]

Imagine right now an antimatter asteroid the size of Hawaii of extraterrestrial origin enters our solar system and is on a collision course with one of the inner planet, Mercury at a fantastic speed ...
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8answers
894 views

Potential staging area for human outposts beyond the planets?

If in the future the human race spreads out in the solar system I would think an outpost orbiting in the vicinity of the heliopause (the furthest extent of the solar wind's influence) might be ...
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5answers
672 views

An alternative way to rotate or in this case rolltate

As far as we know Earth and every other planet in the solar system rotate around their axes. Whether it be Uranus which rotates on its side or Mercury which rotates perfectly straight, all planets ...
2
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1answer
86 views

Looking for a Solar System Simulator including the smaller celestial body, for macOS

I am researching for a sci-fi story that will happen in 2136. There will be a lot of traveling in the Inner Solar System and I need to know the relative distances between two objects. Also, I would ...
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4answers
2k views

Is my planet realistic?

Is my planet realistic? It doesn't need to be able to support life as it's just another planet in my solar system, but is a planet with such a high density and gravity really possible? I calculated ...
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3answers
120 views

Solar expansion and habitability

Is there a feasible setup where the Sun has expanded enough to make the Earth uninhabitable, but some of the other rocky bodies in our solar system (past Earth) become more reasonable colonisation ...
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3answers
3k views

I'm formulating a planet that has silver dust on its surface, and ideally has rivers of mercury flowing on it, possible? Human survival not necessary

I'm new to this and my scientific knowledge is massively lacking in this area (so please take it easy on me!) I'm writing a historical science-fiction novel. Parts of it set in the past (1977) and ...
5
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1answer
181 views

Binary Star System Build - Alpha Centauri

I'm not sure if this site or Astronomy would be better, but I figured I would try here instead. I am attempting to create a [semi]plausible star system in Alpha Centauri for a series. The system was ...
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1answer
92 views

What would have happen to the Solar system if we were to mine a planet away [closed]

So the idea is to slowly mine a planet away , one like Mercury or Venus or Mars. Doesn't matter why or how. Only one of these planets would be removed. How the Solar system would react? Earth will ...
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1answer
114 views

Planet with only plant-based life and very thick atmosphere [closed]

Working hypothesis is as follows: Solar system with an A class sun. Planet has a very thick atmosphere which does not allow much visible light in to the surface. (Like dusk in the day time and ...
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9answers
3k views

Are Geologically Dead Planets Habitable?

One of the planets I'm thinking of for my book series has all of its landmass in the northernmost half of the northern hemisphere (it is thus mostly a water world) and is completely geologically dead. ...
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7answers
151 views

What kind of lunar orbit would cause a total solar eclipse to happen once a day?

The eclipse needs to be visible from at least one region on the planet every revelation and last about one hour.
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2answers
151 views

How long to become a habitable planet

I am creating a world for Sci Fi story in which I am trying to have two non-tidally locked earth sized planets in a binary orbit around Alpha Centauri A. The only way I can think of this happening is ...
3
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1answer
166 views

Binary planets that are not tidally locked

The story takes place in Alpha Centauri, with this binary orbiting just over 1 AU from Rigil Kentaurus. The star system will tightly packed, but following the 10 Mutual Hill Radii separation setup. ...
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1answer
136 views

How Would These Planets Affect Earth's Eccentricity?

A cleaner, narrower-focused improvement of How This Alternate Solar System Influences the Milankovitch Cycle, so not a duplicate. For further clarification, eccentricity is the shape of a planet's ...
6
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1answer
175 views

The Earth and Moon resolidify under a bluer star, their outer layers evaporated and burned away. What do they look like now?

(This is the third in a series of questions, starting with Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands? and How soon does the Earth's ...
4
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2answers
88 views

Possible compositions of a rogue binary system?

I am attempting to construct a world that is primarily lit by light filtered through and reflected off of a crystalline moon so that, at its brightest, the planet receives about the same amount of ...
7
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2answers
339 views

How soon does the Earth's surface re-solidify after the red-giant Sun is replaced with a different star?

(Note: This is a follow-up question to my previous one: Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands?) Thanks to clever stellar engineering ...
9
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7answers
255 views

What tech would aliens use to harvest/alter our star and why?

I'm trying to create a scenario where the local star is "quickly" (suddenly up to thousands of years) removed, dimmed with reduced output, destroyed (maybe), or otherwise fundamentally changed as to ...
5
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2answers
217 views

What if Jupiter and Mars swapped orbits?

I am wondering how will it affect earth or none at all. Seeing that Jupiter by far is a gas giant and has really strong gravitational pull while Mars is mostly dormant, weak gravity and a terrestrial ...
4
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1answer
230 views

Moved into further orbits to protect them, how much damage do Earth and Moon take when the Sun expands?

Short version A far future catastrophe burns/melts away large chunks of the Earth and Moon. For reasons related to my story's fantasy elements, the remains of the Moon have about one fifth their ...
4
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1answer
288 views

In a Red Giant Binary System, How Far and How Wide Can the Habitable Zone Be?

Our estimates of our own habitable zone--a piece of space in which liquid water is possible--have varied over the years, but the current estimate is by Ramirez and Kaltenegger in 2017. Based on an ...
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4answers
552 views

After surviving a black hole/wormhole, what are the chances of Earth start orbiting in a new solar system?

In the event of our sun suddenly becoming a black hole or wormhole of sorts. It transports the earth to another solar system similar to ours. Would it be possible for our planet to start circling ...
3
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2answers
226 views

How do you get steel outside Earth?

I'm looking for a more economical and efficient method of making steel for my project Death Star Unlimited, a mega infrastructure orbiting Mars with a mass of 500,000,000 metric ton give or take 1%. ...
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2answers
100 views

Inter-Planetary Communication [closed]

In my universe humans have colonized Phobos, Deimos, the moon, and Mars. However, they have no fast way to communicate with each other. I'm looking for a fast and possible way for humans to ...
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5answers
113 views

Observatory on another planet in the solar system

My novel takes place in the not-so-far future, where the humans have small settlements and/or bases on the Moon, Mars and Europe. They don't have the tech to leave the solar system, but they actively ...
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2answers
158 views

The major effects on the habitability of exomoons orbiting this Brown Dwarf

I'll need to give some background to this question. I'm interested in the idea of a densely inhabited star system, and having large exomoons is one way that they can all orbit roughly at the same part ...
4
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1answer
113 views

How bright is the night with 18-22 AU distant star?

In my previous question, I asked about how close can two stars in a binary system be for planets around them to stay earthlike, assuming that both stars have very sunlike and both planets very ...
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1answer
73 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 ...
5
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1answer
184 views

Under which circumstances could a planet have two visible suns?

In the story I'm making, it is important that there are two suns in the sky, going at different rythms (maybe the planet orbits one of them each year, and the other each four years, for instance), and ...
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2answers
137 views

How would a binary star system with a planet with 2 moons work? If possible

I am creating a solar system that has a binary star system. The system has 3 planets. The closest being like Mercury. The next being the planet that supports life and being slightly larger then earth....
9
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4answers
223 views

How can an Earth-like moon meet these angular diameter conditions?

NOTE: If there is anything about this question that needs clarification or editing, please don't hesitate to let me know in the comments. Get ready, because you're in for quite a ride. I have tried ...

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