[ElkGroveDan]

This sounds vey series.

[beezdotcom]

This sounds vey series.

Sorry, you misspelled "Sirius". HTH.

[bagman]

This sounds like a crock of Jovian doo-doo.

Pu-238 is not Pu-239. The triggering of a nuclear explosion is extremely delicate. The nuclear material must be of sufficient mass in the proper geometry, and a source of neutrons must be present at precisely the correct instance. I see no reason to believe that any of the above conditions were met. I think that a fission explosion can be easily ruled out.

But, suppose I am wrong (hey, it happens). How do we proceed to a thermonuclear (fusion) explosion? It is extremely hard to do so. It took the USA over five years after World War II to figure out how to do it. Postulating a fission explosion in the Jovian atmosphere, what happens? Well, the surrounding gas is heated, expands, and the energy is dissipated well before there is a fusion reaction.

In short, this speculation is balderdash and whimsey.

[irishtenor]

Could be HUGH!