B Gas planets with solid satellites

AI Thread Summary
Gas planets like Saturn form with solid nuclei that allow them to accumulate gases when positioned far enough from their star. The presence of solid rings and satellites around these gaseous planets is linked to their gravitational influence, which is insufficient for smaller bodies to retain volatiles. The discussion highlights the simultaneous formation of planets and their satellites, emphasizing the unique characteristics of gas giants. Understanding the solid components of gas planets provides insight into their structure and formation processes. This knowledge enhances comprehension of planetary systems in our universe.
Jordi H
Messages
4
Reaction score
0
I assume that planets and their satellites are created more or less at the same time. Why gaseous planets like Saturn have solid rings and satellites?
 
Space news on Phys.org
Small bodies have too little gravity to hold on to volatiles. Once you have a large enough solid nucleus, and far enough from the star, it can start to accumulate the gasses.
 
Thank you. I did not know that the gaseous planets have solid nucleus.
 

Thread 'Illuminating Black Hole Shadows with Dark Matter Annihilation'

Abstract The Event Horizon Telescope (EHT) has significantly advanced our ability to study black holes, achieving unprecedented spatial resolution and revealing horizon-scale structures. Notably, these observations feature a distinctive dark shadow—primarily arising from faint jet emissions—surrounded by a bright photon ring. Anticipated upgrades of the EHT promise substantial improvements in dynamic range, enabling deeper exploration of low-background regions, particularly the inner shadow...
View full post »

Thread 'Matter density right after the decoupling'

https://en.wikipedia.org/wiki/Recombination_(cosmology) Was a matter density right after the decoupling low enough to consider the vacuum as the actual vacuum, and not the medium through which the light propagates with the speed lower than ##({\epsilon_0\mu_0})^{-1/2}##? I'm asking this in context of the calculation of the observable universe radius, where the time integral of the inverse of the scale factor is multiplied by the constant speed of light ##c##.
View full post »

Thread 'If the Universe has a cause, what caused that cause?'

Title: Can something exist without a cause? If the universe has a cause, what caused that cause? Post Content: Many theories suggest that everything must have a cause, but if that's true, then what caused the first cause? Does something need a cause to exist, or is it possible for existence to be uncaused? I’m exploring this from both a scientific and philosophical perspective and would love to hear insights from physics, cosmology, and philosophy. Are there any theories that explain this?
View full post »

Similar threads

I Tidal effects of galaxies orbiting one another with dark energy?
Replies
2
Views
2K
B Saturn's 145 Moons: The Latest Discoveries and What Sets Them Apart
Replies
16
Views
5K
I Where Would Ancient Intelligent Life Have Seen Cosmic Background Radiation?
Replies
2
Views
2K
Stargazing Satellite grids around other planets
Replies
4
Views
1K
B Interstellar navigation to Proxima B with an unmanned probe
Replies
28
Views
3K
Orbital Slingshot and Conservation of Momentum Confusion
Replies
9
Views
7K
Could an Interstellar Gas Planet Heat its Moon Without Fusion Ignition?
Replies
14
Views
4K
Gasses that can be present on a planet habitable by humans
Replies
20
Views
2K
I How does gravity vary in deep mines and interstellar gas?
Replies
6
Views
2K
Red Dwarf Star Systems -- Could they support life?
Replies
7
Views
188

Hot Threads

Recent Insights

Back
Top