After 5 long years of waiting, hoping and wondering, NASA  infally got some good news today:

https://www.theguardian.com/science/live/2016/jul/05/nasas-juno-spacecraft-arrives-at-jupiter-live

Good to see Juno has arrived. Juno was the sister and wife of Jupiter and held the secrets of his power. Let's hope the probe can live up to that expectation.

The strongest magnetic field in the solar system is the sun and that is mainly hydrogen. It is reckoned that Jupiter has liquid metal hydrogen at it's core. It is also a very good source of He3.

Thought I'd lob this one in too:

http://www.msn.com/en-gb/news/science/ecstasy-as-juno-reaches-jupiter-but-now-the-hard-work-starts/ar-AAi8mjW?li=AA9SkIr&ocid=spartanntp

Juno probe returns close-up Jupiter pictures.

http://www.bbc.co.uk/news/science-environment-37259937

Oh, I'm sure that there is plenty of both Carl; perhaps enough to make up an entire planet's worth (though that's just a guess). But Jupiter is large enough that this is just a tiny fraction of the whole. And I seriously doubt that Jupiter is "cold", even by our standards. With strongly conflicting wind currents travelling hundreds of miles per hour, immense pressures, and enough gravity to flatten a semi (lorry, in the UK), there's a huge amount of heat being generated. In fact,Jupiter is warm enough to glow in infrared light. Of course so does the Human body, but nowhere near as brightly.

Astronomy (both stellar and planetary) has been one of my passions for a very long time, Carl. Ever since I was a young boy, in fact.

Good and bad news. Thanks for that.