All Questions
Tagged with gas-giants planet
32
questions
3
votes
1
answer
140
views
What would Uranus look like from light years away?
It has been suggested that at least some of the "super-puff" planets may actually be ordinary planets with rings. Saturn, for instance, may appear as a "super-puff" to an alien ...
- 123
4
votes
1
answer
285
views
If you were standing on a habitable moon of a gas giant, what would the planet look like during the day vs the night? [closed]
If you were standing on the proplanetary side of a habitable moon of a gas giant, and the moon had a thick enough atmosphere to make the sky blue, how would the gas giant look during the day? Would it ...
- 1,107
0
votes
1
answer
2k
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Maximum and minimum masses and sizes of giant planets?
What are the minimum & maximum masses and diameters of giant planets?
Minimum end of the scale
Earth has mass of 1 Earth mass and a mean radius of 6,371.0 kilometers, and thus a mean diameter of ...
- 7,684
5
votes
1
answer
114
views
Assuming a hypothetical system without gas but only solid rocks, how big of a planet can form through the coalescing of these rocks?
I have heard that gas giants are primarily huge solid bodies like regular rocky planets that exponentially gained more and more gas in their atmosphere through their increase in mass which they use ...
- 503
3
votes
1
answer
297
views
Why don't we detect planets around OB stars and no terrestrial planets around A or early F stars?
Looking at an exoplanet database, I noticed that there are very few planets detected around main-sequence OBA stars, and most of them are gas giants/brown dwarfs. Why can't we detect low-mass planets ...
- 6,684
8
votes
1
answer
617
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If the fifth gas giant in the early Solar System was completely ejected, where would it be now?
I've read about the possible 5th gas giant in the Solar System, and about its ejection about ~100 million years after the formation of the Solar System. However, I have not seen anything about its ...
- 6,684
0
votes
1
answer
294
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Could a star become a planet?
Could a star become a planet? I am asking this because the gas giants are ¨Failed Stars¨ and they are classified as planets in our solar system.
user37892
16
votes
2
answers
863
views
Characteristics of the first planets in the Universe?
What would have the very first planets looked like, based on their most likely chemical compositions?
For example:
Were they mostly grey gas giants with atmospheres of hydrogen and helium, ...
- 271
3
votes
1
answer
182
views
Gas Giant temperatures
Sudarsky's gas giant classification predicts the visual appearance of gas giant planets based on their temperatures.
But what determines their temperatures in the first place? Is it just the ...
- 379
4
votes
1
answer
137
views
Largest non-hot gas giants
Excluding 'fluffy' or 'puffy' gas giants that are 'inflated by heat from their stars, what is the maximum radius of a gas giant planet. I keep reading things like "...Jupiter is 'about' as big as ...
- 379
4
votes
1
answer
350
views
Warm jupiter vs hot jupiter, fluffyness
If Jupiter was orbiting at 1AU, replacing Earth, but everything else in the solar system remained as it is currently, how much would the increased heat from the sun increase Jupiter's radius?
In ...
- 379
14
votes
3
answers
7k
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Why does each and every planet of our solar system have an unique axial tilt angle?
Why do planets have an axial tilt? From the above image we can see that each planet's axial tilt angle varies and differs from the others.
What was the cause of this, was this from the beginning of ...
- 904
1
vote
1
answer
145
views
Where do gas giants end up?
I want to create a semi realistic star system generator but I am not sure where to "put in" gas giants. My guess is they can form pretty much anywhere within the sphere of influence of a star at the ...
- 111
3
votes
1
answer
2k
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Would a spacecraft just go "through" a gas giant?
From my understanding of the word gas giant, it is a planet composed of entirely a gaseous atmosphere, and so planets Jupiter and onwards fall in this category.
That being said, what would stop a ...
- 1,069
2
votes
1
answer
166
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How big are the rocky/icy cores of Jovian planets?
The size of Earth? Or bigger? I'd think they'd have to be pretty big to attract all that gas when the planets were being formed.
edit I'm writing a short story and the setting consists of late ...
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