Anyway, you still would not want to land a manned mission there.
Better to land a manned mission on Callisto and explore the other moons and Jupiters atmosphere telerobotically.
Gas Giants
- Thread starter All Seeing Eye
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Anyway, you still would not want to land a manned mission there.
Better to land a manned mission on Callisto and explore the other moons and Jupiters atmosphere telerobotically.
All Seeing Eye
Admiral
If only Titan had a magnetic field like Ganymede. 
Jupiter is both GAS, LIQUID and SOLID
We call them gas giants because we have no other term to accurately describe these worlds.
One thing you need to understand about these world out there is there are temperatures and pressures that are simply mind boggling.
Take hellish Venus for example, its got a solid surface but on the surface are pressures that would scare deep sea explorers.
On everything you know would be crushed out of existence, Venus is 100 times the pressure of Earth, bars or psi take your pick and multiply it by 100. So before being scorched to death on Venus you would possibly be crushed to death since standing on Venus would be like covering every city on earth under a kilometer of water.
The Gas giants are weird because while they do many of thing terrestrial planets do, such as orbiting our Sun like Mars and other planets do but the Gas giants are also very very different. They don't have a solid line which says here is the direct transition from water vapor, to liquid, to solid like the planets of the inner solar system display.
The transition from gas to liquid to solid metal is very soupy and murky so there is no standard outer layer or solid surface in these gas giants.
The only way to define a surface in these worlds is to copy the standard temperature and pressure on the surface of our Earth and cheat saying Voilà here marks the Gas giant's clearly-defined surface.
Jupiter emits more energy than it receives from the Sun, something like double the heat and radiation, its magnetic field is 12,000 times the size of E the largest structure in our solar system. The gravity and sheer pressure inside Jupiter creates a form of superheated plasma, and Jupiter also creates its own heat through radioactive unstable particles deep inside the planet...this is not like a star such as our Sun who create their energy by Fusion
At the top of Gas Giants like Jupiter and Saturn you've got Gas - much like anywhere
as NASA's Galileo dived through the clouds the pressure rose about ONE THOUSAND fold, temperatures rising 1,300°F, 700 °C or 973 K
until finally the spacecraft was crushed into nothing
Keep pushing further and further down to pressures about ONE MILLION times that of Earth and you will find atomic Hydrogen coming together to form liquid bonds...the transition is not clearly defined but
now your temperature is nearer 5000 K (couldn't be assed covert it to Celsius or Fahrenheit)
Hit pressures "pressures exceeding 4 million bars"
http://www.nineplanets.org/jupiter.html
and hey presto you got yourself some exotic Metallic Hydrogen
see the nine planets link for more info
We call them gas giants because we have no other term to accurately describe these worlds.
One thing you need to understand about these world out there is there are temperatures and pressures that are simply mind boggling.
Take hellish Venus for example, its got a solid surface but on the surface are pressures that would scare deep sea explorers.
On everything you know would be crushed out of existence, Venus is 100 times the pressure of Earth, bars or psi take your pick and multiply it by 100. So before being scorched to death on Venus you would possibly be crushed to death since standing on Venus would be like covering every city on earth under a kilometer of water.
The Gas giants are weird because while they do many of thing terrestrial planets do, such as orbiting our Sun like Mars and other planets do but the Gas giants are also very very different. They don't have a solid line which says here is the direct transition from water vapor, to liquid, to solid like the planets of the inner solar system display.
The transition from gas to liquid to solid metal is very soupy and murky so there is no standard outer layer or solid surface in these gas giants.
The only way to define a surface in these worlds is to copy the standard temperature and pressure on the surface of our Earth and cheat saying Voilà here marks the Gas giant's clearly-defined surface.
Jupiter emits more energy than it receives from the Sun, something like double the heat and radiation, its magnetic field is 12,000 times the size of E the largest structure in our solar system. The gravity and sheer pressure inside Jupiter creates a form of superheated plasma, and Jupiter also creates its own heat through radioactive unstable particles deep inside the planet...this is not like a star such as our Sun who create their energy by Fusion
At the top of Gas Giants like Jupiter and Saturn you've got Gas - much like anywhere
as NASA's Galileo dived through the clouds the pressure rose about ONE THOUSAND fold, temperatures rising 1,300°F, 700 °C or 973 K
until finally the spacecraft was crushed into nothing
Keep pushing further and further down to pressures about ONE MILLION times that of Earth and you will find atomic Hydrogen coming together to form liquid bonds...the transition is not clearly defined but
now your temperature is nearer 5000 K (couldn't be assed covert it to Celsius or Fahrenheit)
Hit pressures "pressures exceeding 4 million bars"
http://www.nineplanets.org/jupiter.html
and hey presto you got yourself some exotic Metallic Hydrogen
see the nine planets link for more info
Agreed, although I can't envisage a manned mission even as far as Mars anytime soon, never mind the outer solar system. We're too busy throwing up in the gutter, not looking at the stars.
Isn't a gas giant some where around 30,000 kelvin and the sun 6,000 kelvin. If so it would take a long cooling time to become a class G or K type planet. Since giant classes F, A, B, and O are hotter than the sun. Class M Vulcan and Romulus planets were red indicating cooler than blue gas giants (the hottest color) and yellow or yellowish gold suns hotter than class M reds. This is the photometric colors of ionization of chromosphere temperatures not the cool blue hydrogen seen by the naked eye as seen on Earth. Its late I will research and get back but if someone could write as to planet classes and temperatures I think it might answer some question when considering cooling times.
30,000 K is deep within Jupiter's core and 6000 K is for the surface of the Sun
Inside the core of the Sun the temperature is around 13,930,000° C that's over 45 times the temp of Jupiter
Notice you using the term "hot" I think you might also be confusing temperature and hotness
think what will burn you more a drop at 90 degrees C of oil on your finger
or jumping into bath tub of water at 70 degrees C ( F 158)
the bath of course
Stars don't cool easy BTW
Earth sized stars like our Sun will normally take a trillion years to cool off once they reach white dwarf stage,
Trillion as in thousand billion
btw the universe is only something like 13.5 billion yrs old
Isn't hot a temperature and since water freezes at 273.15 K and boils at 373.15 K wouldn't we consider Jupiter's core like the sun's surface to be at an extremely hot temperature?
I don't think you said exactly what Jupiter's temp is on the surface. I think I read you saying that the sun is hotter in the core but which is hotter on the surface?
Once I can determine a gas giant's core and surface temps I may be able to think about it in terms of distance and cooling times. Ultimately I think you unintentionally confused me more with the first part: hot/temperature.
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