Physics puzzle: A 1" radius 7 billion K temp. ball is activated inside Jupiter... Physics puzzle: A 1" radius, 7 billion K temp. fireball is activated inside Jupiter...from an artificially induced fission reaction of .04kt. It is activated deep enough into Jupiter to be under 40,000,000 bars pressure, let's assume at 90% depth near the center in the midst of liquid metallic hydrogen, just outside the ammonia, methane, water-ice shell surrounding the nickel-iron core. Assume a temporary fusion reaction takes place. (Is this possible?) Does it "blow-out of" the planet or does is "blow up" the planet? What are the implications?