Holy crap! look what i found!

Pathfinder gothraga here. about.... 1,800 Ly from home (ANY NA)
Its bin a good Run so far, i have found about 20 Good planets and even a Earth type!
Then i found this "ICE WORLD" Look at this!
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Anyone know how a place with Surface temp of 2,594K is also made of 25% ice?:p
 
So you can take heat + pressure and make Ice.. This is a new 1 for me. lol

I'm not a chemist but I would think you would either have ice or frozen hydrogen and frozen oxygen. Pressure reduces the ability for atoms to move about, so they'll "freeze" due to the lack of space to move.

I don't know how the temperature would affect the covalent bond in water/ice unless I looked it up.
 
So you can take heat + pressure and make Ice.. This is a new 1 for me. lol
Well solid water, but not ice as you know it. The ice we get is from the molecules slowing down enough that the H-O-H molecules move slowly enough their uneven charge can make them all form a grid which is why water expands as it freezes. Here the molecules would be wanting to move faster than ever but be unable to under the pressure - it'd be all crushed up and super-dense and nothing like ice. wonder if it's white or clear?
 
4 earth masses in a smaller diameter, that thing is really compressed.

What I don't understand is why it only has 1.62G
 
Was there supposed to be an image attached? Nothing seems to be there...

ED sometimes make some very odd surface pressure claims on relatively small worlds. Also, an "atmosphere" of 100% water is an ocean, not an atmosphere! ;)

I've seen a lovely Earth-like world orbiting a Neutron star, kinda completely impossible for a number of reasons... (one of which it would have been cooked to a crisp in the prior supernova!)
 
I've seen a lovely Earth-like world orbiting a Neutron star, kinda completely impossible for a number of reasons... (one of which it would have been cooked to a crisp in the prior supernova!)
Neutrons go forever though (pretty much) - maybe enough time for things to start again?

I've been wondering this looking up at nebula filled skies and dreaming of the childhood stories and legends and religions you'd have about the great dark and the great purple, split asunder with a shaft of light that we call the milky way - but how close to a supernova gets sterilised? How long does it take to recover if at all?
 
4 earth masses in a smaller diameter, that thing is really compressed.

What I don't understand is why it only has 1.62G

That planet is actually bigger than Earth - Earth radius is only 6,371 km (and that one's over 10k). Makes the gravity a tad more puzzling, even.
 
Neutrons go forever though (pretty much) - maybe enough time for things to start again?

I've been wondering this looking up at nebula filled skies and dreaming of the childhood stories and legends and religions you'd have about the great dark and the great purple, split asunder with a shaft of light that we call the milky way - but how close to a supernova gets sterilised? How long does it take to recover if at all?

A supernova would basically vapourize all but the outer planets in a system, and the latter neutron star would not have enough IR and light energy output to support life on a nearby planet, and would also most likely be a source of incredibly intense X-rays and Gamma rays, pretty much sterilizing everything near it.

No, not a remotely plausible situation... :(
 
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That planet is actually bigger than Earth - Earth radius is only 6,371 km (and that one's over 10k). Makes the gravity a tad more puzzling, even.

That small metal core will be the culprit there. The atmo pressure, well, when your atmosphere is mostly composed of water, that pressure will build up pretty damn fast, just look at how high it gets with just a few kilometers of water stacked up in our own oceans, then compare that with how 'deep an atmosphere is.

I actually ran across a planet very much like this the other night, slightly larger than Earth, about 2x the mass, little over 1g, water atmo under incredibly high pressure, well over 1k K, ice planet with water atmo and no metal core. They are interesting places, shows that what we consider the 'proper' conditions for ice are kind of subjective really.
 
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