All Questions
Tagged with gas-giants gravity
10
questions
2
votes
2
answers
365
views
At what point above Jupiter is the gravity Earth-like?
Jupiter is a massive planet. We get it. However, we have also heard that, since it has such a huge radius, at different elevations it is possible to experience different levels of gravity. We hear ...
- 469
3
votes
1
answer
169
views
Could a super-Jupiter exoplanet in the habitable zone have an axial tilt?
I’m wondering if a massive planet (maybe 10 times the mass of Jupiter) in the habitable zone of a G type star could have an axial tilt similar to earth or if gravitational forces would erode the tilt ...
- 1,107
3
votes
1
answer
63
views
How does this Toomre GI criteria have the period in the denominator?
I saw this equation in a literature review recently talking about the Toomre criterion for gravitational instability:
Given here in section 2.1.1: https://arxiv.org/pdf/1801.06117.pdf, viz.
But I am ...
- 415
6
votes
2
answers
1k
views
Gravity of a gaseous planet without a core
Both Jupiter and Saturn have rocky cores. Is there such of a thing as a gaseous planet without a core? And would a planet without a core have gravity?
- 1,559
-4
votes
1
answer
126
views
Can air/gas be slowed down by friction [closed]
Can wind/air that is moving at average speeds be slowed down by the cause of Friction? Also, Can Air bubbles in water be slowed down because of Friction? Please cite your sources.
- 255
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
3
votes
1
answer
350
views
Are gas giants supported by thermal pressure?
I've heard gas giants are supported because there is an equilibrium between thermal pressure and gravity. That is, if Jupiter were to suddenly begin compressing, temperatures would increase to the ...
- 8,135
-7
votes
1
answer
458
views
Can a gas giant be hollow?
Let's think of Saturn, because of its density. Can there be a place near the center of the planet where the gravity upwards is more than towards the center, and with an atmosphere that is more ...
4
votes
2
answers
3k
views
Collision of asteroid and gaseous planet - what would happen
What happens when asteroids (or other small bodies) "collide" with a gas planet? In my head it would either go through it or just stay "inside" it due to the strong gravity. I tend to believe in the ...
- 390
24
votes
4
answers
12k
views
Is Jupiter made entirely out of gas?
I heard that Jupiter is made out of gas. But in school I learned that Jupiter has gravity which is 2.5 times that of Earth (Gravity that can tear apart a comet) and gravity is proportional to mass.
...
- 1,109