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Questions tagged [planets]

For questions about any large astronomical bodies classified as planets, and their effects on their systems.

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How do Hill spheres work for binary planets?

A small moon is able to maintain a stable orbit around a planet at just under half the radius of the planet's Hill sphere. Most of Jupiter's moons are in this configuration, possibly made more stable ...
Charles Rogers's user avatar
4 votes
1 answer

Procedural Atmosphere for exoplanet - pseudorealistic composition, pressure etc

I have a programme built in python and rust, procedurally generating stars, planets, etc. I have come to a point where I have to work on atmospheric characteristics, hopefully managing to get a pseudo-...
Hal's user avatar
  • 141
3 votes
0 answers

Crustal composition of an ammonia planet

I am currently building a planet that weighs about 4 earth masses and is 2.3 earth radii long. It is an ammonia planet (as the title suggests), and has ammonia oceans with some dissolved water ice, ...
Neil Iyer's user avatar
  • 1,544
2 votes
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Climate types for large volcanic islands on tidally locked planet

My planet is tidally locked to a red dwarf, which itself orbits a yellow sun like our own. It has roughly the same atmospheric conditions as Earth (perhaps a slightly thicker atmosphere, but not ...
DMacc1917's user avatar
  • 956
2 votes
0 answers

Plate Tectonics/Geology on Carbon Planets

After researching on and off for a few months, I thought I had how a Carbon Planet would work down right, up to and including an ammonia-based xenobiology, but a video I saw today got me wondering if ...
Sam D. Jones's user avatar
2 votes
1 answer

A small planet with earthlike gravity

Is it possible to create an Earthlike planet, that is smaller than the Earth , like for example the size of Mars, by altering the core composition like for example making it: Iron (Piron ): 75.6% ...
Naima's user avatar
  • 363
1 vote
0 answers

Weather patterns on a world with a homogenous distribution of land and ocean?

What would the weather patterns be like on an Earth with a more homogenous distribution of land and ocean? That is, keep the overall amount of water the same, the ratio of water to land the same (...
Drewch's user avatar
  • 11
0 votes
1 answer

At what rate does my planet become tidally locked?

I am designing an alien planet for a speculative evolution project. It is slightly less massive than Earth and is orbiting around a red dwarf, within the Goldilocks zone. It takes 220 Earth days to ...
Ambjörn's user avatar
  • 176
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Can there be habitable moons despite heavy changes in axial tilt of their mother body?

Ok so i created a gas giant with 10 Jupiter masses and like 9 moons between 0.8 and 1.5 earth masses. All exept the most distanced of those moons are tidally locked to the gas giant and their axial ...
Zadai.Fehbiab's user avatar
0 votes
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I’m trying to imagine an Earth-like planet around Barnard’s star

What I have established about this planet is that it is the size of Earth but it is located 2.2 AU from Barnard’s star, a red dwarf. I’m trying to figure out how much greenhouse gases are needed to ...
Fredrik Hansing's user avatar