hot ice ?

[Majama]

I see ice body planet with surface temperature 328K. How it can be possible?

 

[TiberiusDuval]

See what air pressure column says.

 

[TiberiusDuval]

Enough pressure and you can have extremely hot "ice".

 

[Majama]

OK, but as i remember higher preasure makes lower melting temperature, right? It gets even more unnatural.

 

[TiberiusDuval]

OK, but as i remember higher preasure makes lower melting temperature, right? It gets even more unnatural.
View attachment 203208

Right untill you get to real high pressures. Nowadays high pressure physics tell that under quite high pressures you get hot ices

 

[TiberiusDuval]

Formation of other-worldly 'hot ice' observed for first time – Physics World

Flash Physics: need-to-know updates from the world of physics

physicsworld.com

 

[Quantis Trap]

High enough pressure on gas giants and they say it can even rain ice and in diamonds!

 

[Majama]

Wow, interesting, thanks, im still learning.

 

[Cmdr Snuffler]

High enough pressure on gas giants and they say it can even rain ice and in diamonds!

I'm fascinated by Metallic Hydrogen...under insane extreme pressure hydrogen turns into a metal...this is what generates the huge magnetic fields around gas giants.
Physics is gr-r-reat!

 

[Vandaahl]

Bit of a weird thing though. 2k atm's is high, but far from the 50k mentioned in the article. Moreover, its a water ice planet with water geysers, and not a trace of oxygen or hydrogen found in its atmosphere...

 

[yelboc]

At high pressure, three different types of ice..

2000 ATM = ~ 2000Bar though isnt enough pressure for ice - would be water, so a bit off.

 

[Ian Doncaster]

The slightly less explicable thing is that you can get similar ice worlds with
- 300-400k surface temperatures
- no atmosphere at all (you can even land and drive around)

If those ones aren't just a bug I'm not sure what sort of real thing they're trying to represent.

 

[DMaster]

The much more interresting question is, why is the atmospheric pressure of this planet out of range?

 

[Caydran]

328K below zero....

 

[Sysmon]

At high pressure, three different types of ice..

2000 ATM = ~ 2000Bar though isnt enough pressure for ice - would be water, so a bit off.

+2 for use of phase diagram. It is an interesting and unusual property of H2O that the freezing point actually moves towards lower temperatures as pressure increases around the 0C/10 - 1000 MPa range. That makes it a lot easier to sustain liquid water and ice together in habitable zones.

S

 

[Northpin]

i kinda find it weird that such a small planet, with only 0.76G can hold an atmosphere that thick enought to be able to put up a pressure of 2000 atmospheres
Our Venus has less than 100 atmospheres pressure

 

[Bottom Hat]

i kinda find it weird that such a small planet, with only 0.76G can hold an atmosphere that thick enought to be able to put up a pressure of 2000 atmospheres
Our Venus has less than 100 atmospheres pressure

It has a core made of immovable nav beacon material.

 

[TiberiusDuval]

i kinda find it weird that such a small planet, with only 0.76G can hold an atmosphere that thick enought to be able to put up a pressure of 2000 atmospheres
Our Venus has less than 100 atmospheres pressure

Well I have always wondered about Elite's super-Venuses or lets say failed gas giants.