Composition of planets vs. moons

AI Thread Summary
The discussion explores the composition of planets versus moons in the Solar System, noting a 1:1 ratio of gas planets to terrestrial planets. In contrast, the ratio of gas moons, defined as moons orbiting gas giants, to terrestrial moons is significantly higher at approximately 165:3. Participants express skepticism about the existence of "gas moons," clarifying that all known moons are rocky, with some having thin oceans. The conversation concludes with the observation that there appears to be no correlation between the ratios of planets and their respective moons. Overall, the topic highlights the distinct differences in composition between planetary and moon types.
Loren Booda
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In our Solar System, how does the ratio of gas planets to terrestrial planets compare with that of gas moons to terrestrial moons?
 
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Hi Loren Booda! :smile:

Surely there are no "gas moons"? :confused:
 
Well gas planets to terrestrial planets is obviously 1:1 and gas moons (i.e moons around gas planets, tim) to terrestrial moons is like 165:3.

There appears to be no correlation at all. Oh well.
 
Kracatoan said:
Well gas planets to terrestrial planets is obviously 1:1 and gas moons (i.e moons around gas planets, tim) to terrestrial moons is like 165:3.

There appears to be no correlation at all. Oh well.

Sorry. Are there no liquid moons? That is basically what I meant by "gas moons."
 
I believe all solar system moons are believed to be rocky.

That includes a few that have thin oceans above the rocky surface.
 
God bless us, every one!
 

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