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larrybud
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Title says it all. Could a planet exist which is completely liquid water?
How about an ice core and water surface?
How about an ice core and water surface?
No. Nothing physically forbids it.larrybud said:How about in regards to physics? Anything in the laws of nature that would prevent it from happening? (keeping in mind that odds of it being low because of dirty comets, etc)
larrybud said:Title says it all. Could a planet exist which is completely liquid water?
How about an ice core and water surface?
sanjvern said:It is rare to impossible probability that only two elements hydrogen and oxygen only be constituents of a planet
larrybud said:Title says it all. Could a planet exist which is completely liquid water?
How about an ice core and water surface?
This is why I was examining the phase diagram for water. It doesn't take all that much heat to keep water liquid at thousands of atmospheres of pressure.TGlad said:I don't think it is possible Larrybud, the pressure on the water in the centre of the planet would be so large that it would form into some sort of metallic water, and probably produce a lot of heat. I guess it depends on how small an object you want to call a planet, and how far from the sun.
An ice core seems even less likely as the centre would be hotter than the surface.
What? So the entire planet would exist as a gaseous vapour until some space dust came along and caused the whole cloud to collapse as rain? :rofl:Gannet said:Wouldn't the water require a hygroscopic nuclei (dust particle) like rain?
But the Earth is composed of material considerably denser than water, or compressed water ice. The pressure at the centre would be more akin to 50-70 gigpascals. Would that equate to a solid?At the Earth's core the pressure is about 330 gigapascals
DaveC426913 said:Google this phrase: phase diagram water
Pick a pressure and a temperature. Determine whether it will be solid or liquid.
An all water planet, also known as an ocean planet or water world, is a hypothetical planet that is completely covered in water, with no landmasses above the surface.
Theoretically, yes. It is possible for an all water planet to exist, although no such planet has been discovered so far. The conditions for an all water planet to form would require a larger amount of water compared to other elements during the planet's formation.
It is possible for life to exist on an all water planet, as we have discovered life in extreme environments on Earth such as deep sea hydrothermal vents. However, the types of life forms that could exist on an all water planet may be very different from those on Earth.
An all water planet would likely have a slower rotation due to the lack of landmasses to create friction and slow down its spin. Its orbit may also be affected by the distribution of mass, potentially causing irregularities or changes in the planet's orbit over time.
At this time, we do not have the technology to detect an all water planet from Earth. Most of our current methods for detecting exoplanets rely on changes in a star's light as a planet passes in front of it, which would not be possible for an all water planet. However, with advancements in technology, it may be possible in the future.