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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2answers
131 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 ...
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1answer
78 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-...
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1answer
87 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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142 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
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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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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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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 ...
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3answers
183 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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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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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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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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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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892 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
670 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 ...
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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
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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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119 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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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 ...
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1answer
170 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
91 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
112 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
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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
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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
150 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
160 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
134 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 ...
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1answer
171 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 ...
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2answers
84 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
330 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 ...
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7answers
251 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 ...
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2answers
212 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 ...
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1answer
227 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 ...
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1answer
287 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
549 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 ...
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2answers
224 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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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
147 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 ...
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1answer
107 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
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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 ...
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1answer
182 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
123 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....
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4answers
214 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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1answer
192 views

Is it possible to make a stable planetary system like this, and what would the orbits have to be?

I have a K-type star (0.5 stellar masses) as the central body, and the planets are as follows (those I want to be in the habitable zone in bold): I: An uninhabitable rocky inner planet 50% the mass ...
6
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5answers
393 views

What star can give an earth-like planet a 1-day year?

I did the orbital period for a planet orbiting a mass = 1 sol with a 24-hour year, it’s got a semi-major axis of 1.82 million miles - far and away beyond the Roche limit, still beyond the corona, but ...
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2answers
171 views

Creating “Sunfall” on the moon of a gas giant

I'm attempting to figure out the orbital physics of a system that has a habitable body that has intense periods of waxing and waning sunlight. I've come to the assumption that the best body for this ...
5
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1answer
129 views

Could a binary planet system have a shared magnetic field?

I want to have a two-world binary planet system where both have intelligent life, orbiting a single star. The two planets are assumed to be tidally locked to each other and orbit each other every 36 ...
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6answers
384 views

Could there be a planet where no electrical device works but that it can house life? [duplicate]

Far, far away from the Earth, there is a planet. A planet full of life. Where an intelligent species reign above all. But they haven't mastered the spirit of the thunder, and they will never. This ...
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3answers
949 views

Could a solar system exist inside of a nebula which is made of breathable gases?

Far, far away from the Earth, there is a nebula. An enormous cloud made of 78% nitrogen, 20% oxygen and 2% other non-lethal materials. These gases swirl around a star, and the pressure around it is ...
4
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1answer
146 views

Could intelligent life arise on a planet that isn't 'tethered' to a star, just drifting near to one? [duplicate]

Earth's movement in space is obviously linked to the Sun, as are many other planets. But what I'm asking, is could intelligent life develop on a world that is merely 'passing by' and basking in a ...

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