Questions tagged [gas-giants]

For questions relating to gas giants: large planets composed of gases (usually mostly hydrogen and helium).

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34
votes
7answers
6k views

Could you float a boat on a gas giant?

A futuristic entrepreneur wants to start a cruise line company and needs to build a cruise ship that will not only float on a gas giant, but be habitable throughout a 7 day trip (for the uber-rich of ...
32
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6answers
8k views

Is it possible to orbit inside a gas giant?

When we talk about orbits we often imagine a ship or station orbiting a planet outside its atmosphere. Is it possible a ship could go into orbit inside its atmosphere (perhaps to hide from other ...
28
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12answers
9k views

Would gas giants work as waste disposal sites?

In my novel, the many moons of Jupiter and Saturn have been colonized, but I'm running into some logistical problems - namely, waste disposal. My first instinct was to dump it on-moon; while this is ...
23
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4answers
5k views

Can a gas giant have its own habitable zone?

Gas giants can generate heat via the Kelvin-Helmholtz mechanism. It's oft-repeated that Jupiter actually generates more heat internally via this method than it receives from the Sun. Scale this ...
20
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4answers
4k views

Is a Jupiter-sized planet plausible in a habitable zone?

We lived through loads of questions regarding aquatic races, so buckle up, I am going to gather some ideas around insectoids. The homeworld and race This race lives on a planet which has lower ...
19
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4answers
1k views

Earth-like Moon around the Gas Giant. Eclipse length?

Worldbuilder in dire need! I'm trying to figure out the eclipse length of a habitable Earth-like moon that is rotating around a gas giant. The story that I work on is centered on the Earth-like moon, ...
18
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11answers
6k views

What would be the first thing humans would mine on Jupiter?

Jupiter is a terrible place to be, but for a number of artistic reasons, I'd like to have my story take place there and only there. "Mining", or resource extraction by any other name, is the usual ...
18
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1answer
960 views

Can a habitable moon rely on the magnetosphere of its parent planet for radiation protection?

Science-based answers, please. Key points: the main concern is radiation protection for sustainability of human life (and accompanying plant and animal life ecosystems, whether earth-like or not). ...
14
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2answers
948 views

What kind of Gas Giant has a “safe zone” between the radiation from a star and the radiation from a gas giant planet?

This is a progression from my first question, here (if this is too similar to my original question, please let me know of a better way to address this, as I am not getting the answers I need on that ...
13
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1answer
1k views

How to explain planetary rings pulsating?

A spacecraft enters an unnamed system and spotted a gas giant with a pulsating planetary ring, it glows bright intermittently. What natural phenomenon could be responsible for such brilliant display? ...
13
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3answers
532 views

Can life arise on a brown dwarf?

Brown dwarfs are celestial bodies in the gray area between planet and star. They're huge, gaseous, hot compared to planets, and come in all different kinds. (1) Is it possible for life to develop in ...
12
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3answers
748 views

Is it possible for life to exist on the core of a gas planet?

I was thinking of writing a story and had the idea of having a society exist on the core of a gas planet. The core would be similar to earth with a breathable atmosphere similar to ours above it but ...
10
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6answers
965 views

How could a breathable ultra-high pressure atmosphere form?

Some background: I'm developing a world that could, theoretically, be inhabitable by humans (with a high enough recruitment success to at least keep a stable population), randomly determining ...
10
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3answers
646 views

What is the maximum orbital time for my moon around my planet?

I fear the math involved is beyond my capabilities on this one. I have what I consider to be more than a Layman's understanding of the physics involved, and I believe I can follow the math well ...
10
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5answers
304 views

Effects of regular prolonged eclipses on environment

What would be the effect on climate on an Earth-like moon of a gas giant, which experienced regular ("monthly") total solar eclipses (by its gas giant parent) lasting approx. 40 hours. I'm trying to ...
9
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2answers
1k views

Smallest Black Hole to 'heat' a Gas Giant

So I want a large power source to heat my new real estate on the Jovian moons. I create a micro black hole (MBH), maybe a few kg, maybe more and drop it into Jupiter. I expect the following to happen [...
9
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2answers
315 views

How do I design the solar transit of a hot Jupiter?

BACKGROUND The world I'm designing currently has a gas giant of the type known as a hot Jupiter orbiting close to the sun and causing solar flares. I would like the inhabitants of my Earth-like world ...
9
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3answers
827 views

Details needed for day cycle of lunar world orbiting a gas giant

I'm writing a science fiction story set on a moon orbiting a gas giant. I want to understand how the world's day night cycle would appear from its surface and how the world might be affected by this ...
9
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2answers
420 views

Temperature and climate “under” the gas giant in a tidally locked moon

I've begun the laborious (but fun!) process of putting another world together. Known constraints include: Habitable, (super-)Earth-sized, tidally-locked moon to a gas giant; the giant, where visible,...
8
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3answers
480 views

How to create a “twilight” world around a red dwarf star

I'm looking to build a "twilight" world, where days are like twilight even when the sky is clear and nights are...very dark. Cloud cover might be able to turn day to an early night. I do envision a ...
8
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4answers
520 views

Can this unique planet be colonized?

In the story I'm writing, a gas dwarf (named Eden) is discovered in a triple star system. Its atmosphere is mainly oxygen and water based, and its gravity is slightly higher than Earth's. Unlike our ...
8
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2answers
339 views

Gaseous moons: Are they possible?

Our solar system has 4 gas giants(Uranus and Neptune are technically ice giants, but who cares), which share nearly 200 moons amongst them. Yet all of these moons, even the giant ones like Ganymede, ...
8
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3answers
801 views

Captured Earth-Like Moons around Gas Giants

Is there a limit (and if so, what is it) to the size (mass) of terrestrial planet that could be "captured" as a moon by a migrating gas giant? I'm writing a novel where a colony ship crashes on such ...
8
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1answer
311 views

How do calendar systems arise? How would this affect a civilization's time-keeping if originating on the moon of a gas giant? [closed]

So I understand how gas giants and their many, many moons operate, and I can make educated guesses about how Earth-sized satellites could orbit a large gas giant, as well as how gas giants can be in ...
8
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1answer
449 views

Brown Dwarf Star vs Gas Giant as parent for habitable moon

I seek to build a habitable moon of a giant planet, thus I looked at the Rouche Limit Equation to figure out how to get the biggest possible Hill Sphere for my moon to exist in. $r_H = a(1-e)\sqrt[3]{...
7
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3answers
254 views

Are there any plausible 'alternative' methods of planetary formation?

The selected answer on this question provides an extremely good, and detailed, description of what is generally accepted to be the main (only?) way a terrestrial planet can form, i.e. through ...
7
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3answers
3k views

Life on a gas giant?

I know of the conceptualized "Sinkers", "Floaters" and "Hunters" that Carl Sagan and Edwin Salpeter of Cornell conceived of - as possible life forms that might inhabit a gas giant. At the time they ...
7
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1answer
78 views

Which side of a tidally locked moon experiences higher radiation?

Looking most specifically regarding the moons around Saturn, Jupiter, and Uranus. I've been unable to get a concrete answer on this through various sources. I've actually read several articles briefly ...
7
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3answers
260 views

How can perpetually-gliding lifeforms develop space travel?

Malgrovian gliders inhabit the middle layers of the atmosphere of Malgrov, a gas dwarf. They spend most of their life gliding, preying on giant balloon-like floating lifeforms. When they get older, ...
7
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1answer
229 views

Heating a gas giant's moons in a red dwarf system

Being new, this is my first question. I've read some other posts that gave me valuable insight, but I still have some questions. First, some specifics: Star: red dwarf. 80 x jupiter mass. 3 billion ...
6
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3answers
618 views

Is it possible for a moon to stay on the same side of its planet relative to the sun?

I'm building an earthlike world that has a moon orbiting a gas giant. Is it possible for the moon to always be between the planet and the sun? Also, is it possible for a moon to rotate around its own ...
6
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3answers
945 views

Life on a rogue planet

I am imagining a special ecosystem on a rogue planet (a planet that wanders throughout space without orbiting a star or other heavenly object) but I would need your help to fill in the gaps and ...
6
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2answers
391 views

What would happen on the surface of a terrestrial planet captured by a gas giant?

So, from what I've read of Porter & Grundy (2011), most gas giant planets orbiting within their star's habitable zones are thought to have migrated there from further out in the solar system, with ...
6
votes
1answer
636 views

Timekeeping Systems on a Habitable Moon

Ok, this is take two. Hopefully this is specific enough. I have a link to the original question here. And for those of you eager to see my sources for this, I'll link two videos here from the ...
6
votes
2answers
188 views

What conditions to make this habitable moon plausible?

I'm trying to figure out how to make this gas giant moon habitable. Here are the factors involved: Moon is sub-temperate, mountainous with a nitrogen-oxygen atmosphere, with the planet being mainly ...
6
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4answers
197 views

how would a semi-permanent colony orbiting Jupiter protect itself from radiation?

It seems like the Jupiter system is especially attractive in terms of natural resources, and while I assume the majority of any extraction labor will be performed by machines, I also figure there will ...
6
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2answers
229 views

Plausibility of a habitable gas giant atmosphere

So I was watching Issac Arthur videos recently, about colonizing the other planets of our solar system. And it was pointed out that Neptune and Venus have atmospheres and gravity such that an airship ...
5
votes
4answers
318 views

Could this work? How to? Terraformed gas-giant

I have an idea for a scify/lost technology world, that I would like to check the plausibility of. What I want A terran world of large size. The crust of the world is thin, and hostile gas-organisms ...
5
votes
4answers
274 views

Can a Jupiter-Like Gas Giant Have Deep, Dark Storms?

For this question, I was inspired by the following image of the "Jupiter Abyss": What I want to know is, can a Jupiter-like gas giant have thousands of giant black storms, kind of like what I've ...
5
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3answers
1k views

Naturally making a gas giant moon habitable

Let's say that in my planetary system there is a gas giant around the size and distance from the Sun as Jupiter. I need the planet to be similar enough to earth to be able to be inhabited natural by ...
5
votes
9answers
320 views

What could cause a difference in coloration between the hemispheres of a gas giant?

Would it be possible for a gas giant to have differently colored hemispheres? E.g. the northern hemisphere appearing blue when looked at, while the southern hemisphere would appear brown? (or any ...
5
votes
3answers
336 views

How can you set up a mine for the lower layers of the gas giants?

So in the story I'm writing, mankind has advanced farther in the next few decades than we have over the past couple thousand years. Colonization has allowed us to settle the planets, and the FTL drive ...
5
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2answers
460 views

Mining Metallic Hydrogen

The Hegemony is in need of superconductors for their fleets of stratospheric craft (stratocraft for short) as well as many, many, many other applications. I recently read metallic hydrogen is a ...
5
votes
1answer
378 views

Can I have my blue/green habitable Gas Giant? [duplicate]

For my current Eclipse Phase campaign/Fan Fiction I set up a "habitable" Gas Giant, by habitable I mean, that there is a layer in its atmosphere, where 1 bar of pressure and a temperature of ca. 283 K ...
5
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0answers
116 views

How could a station on Cordelia be designed in order to extract helium-3 and deuterium from Uranus? [closed]

Some details: At the end of the 21st century, the first expedition to Uranus launches to mine helium-3 and deuterium from its atmosphere. The plan involves a tether dangled into the upper atmosphere ...
4
votes
5answers
675 views

Is it possible to transform Jupiter into micro-star?

For fusion to occur we need extremely high temperature at the core to overcome coulomb barrier or for the nucleus to be close enough to tunnel into each other. Is it possible for type 2 civilization ...
4
votes
2answers
264 views

Planetary system with a solar eclipse every day - need help designing

I have a habitable moon orbiting a gas giant. The moon is not tidally locked with the gas giant. The orbital plane of the moon around the gas giant is the same as the orbital plane of the gas giant ...
4
votes
3answers
154 views

Floating islands in a gas giant

A highly improbable mini-Neptune develops (naturally or artificially) an atmospheric layer perfectly suited for carbon-based air-breathers like us: a livable ratio of oxygen to helium/nitrogen/argon/...
4
votes
2answers
110 views

What are some plausible formation explanations of a non-hot “Fluffy” Gas Giant planet?

So, in my research and preparation for the question I asked immediately before this one, I was introduced to the concept of "fluffy" gas giants, gas giants with significantly lower density than would ...
4
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3answers
158 views

Would a laser relay work better on the surface of an airless body or in orbit?

Background: In the early 22nd century, a laser station has been established on Uranus' moon, Cordelia to shoot chunks of frozen deuterium into the inner solar system for fusion fuel. However, the ...