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Is there some liquid planets out there?

by MadAtom
Tags: liquid, physical laws, planet
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Nov22-12, 02:20 PM
P: 27
well there are gaseous planets... what are the laws that avoid the existence of a giant liquid planet with a little rocky nucleus?
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Nov22-12, 04:03 PM
Drakkith's Avatar
P: 11,594
As far as we know, most planetary systems form from gas clouds that are composed mostly of Hydrogen. So giant planets are far more likely to get as massive as they are by absorbing large amounts of hydrogen and not other materials, which are far more rare.

However, consider the fact that Jupiter's composition is dominated by LIQUID hydrogen thanks to the enormous pressure inside it. So the answer to your question may depend on what you consider to be a "liquid planet".
Nov22-12, 06:19 PM
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Chronos's Avatar
P: 9,386
The trouble with liquid water is we are unlikely to find it on planets outside of a stars habitable zone, and few such candidates are known to exist thus far. But, we need not leave the solar system to find extraterrestrial water. Europa and Triton, satellites of Jupiter and Saturn, are suspected to possess vast oceans of liquid water underneath their frozen surfaces - see for discussion.


Nov22-12, 09:46 PM
P: 11,625
Is there some liquid planets out there?

Does liquid rock count?

Go back in time to the early days of its formation and Earth was a 'liquid' planet, for suitable values of 'liquid'.
Nov23-12, 03:11 PM
P: 27
I think I'm going to study more about gaseous planets then I'll reformulate my question... thank you all.

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