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As promised, here's a water world for you! It puts the Earth to shame, as this is not only a water planet, but a water planet with no solid surface. The water goes down to the core, technically speaking. Eventually the pressure becomes so intense the water ceases to be a liquid and doesn't become a gas or a solid, but a plasma instead. It also becomes extremely hot.
This planet, though procedurally generated, was found in a tour of the Orion Nebula I made another buddy of mine on here.
The Orion Nebula is a stellar nursery, meaning this planet, its home star, and many of the stars in the immediate area are all still babies or being formed.
It even has a little moon orbiting it. It's quite hot too, but appears to be cooling down with time. It will probably cool down enough to be comfortable for life! If it existed for real.
There is its sun, and those three other dots you see aren't other planets. They're other stars so close as to be visible in the day!
So as promised: Water world for my water friend. I hope you enjoy! Keep looking up!
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If I find any others like this I will bring them over to you @Duality!
Not necessarily. Given a world with enough water it would be possible for it to coalesce like this. However with a world where there is no sea floor, the combined pressure From the water above and the heat from the core can force matter into taking a different state. So if you sink far enough I think you would come across a water vapor middle, then you would fall into a thick plasma/liquid that eventually you would no longer be able to sink through.
Well, there is a difference between a rocky core and a solid core. The best example is Jupiter. It’s a gas giant with a core of dense elements (hydrogen, helium, etc) that’s under extreme pressure. Some consider it solid rock, but it’s not known for sure. Jupiter does not have a crust in the standard definition of the word. (If Jupiter had attained just 80 times more mass, it would have become a star)
A world like this can feasibly exist, though the water would probably not survive so long.