Knowing that people aren't good at reading text from different places...
Problem is that igniting chain reaction requires completely symmetrical and fast implosion which is created with very fast controlled shockwave, just
adding external pressure wouldn't cause it, neither talking that when external pressure would be enough to compress plutonium heat would have
vaporised whole junk much before that.
And reason why implosion must happen in milliseconds is that otherwise energy release from start of fission reaction breaks reaction mass (/stops
further collapsing) even before chain reaction has really started preventing it from achieving significant yield.
Remember those many accidents involving nukes with highly enriched weapon grade material getting "treated badly" and where aircraft crashes (and
resulted fire) and other accidents have caused even detonation of explosives without creating critical mass.
January 17, 1966, Palomares, Spain
A B-52 bomber carrying four hydrogen bombs collided in midair with a KC-135 tanker near Palomares, Spain. Of the four H-bombs aboard, two weapons'
high explosive material exploded on ground impact, releasing radioactive materials, including plutonium, over the fields of Palomares.
January 21, 1968, Thule, Greenland
Four nuclear bombs were destroyed in a fire after the B-52 bomber carrying them crashed approximately seven miles southwest of the runway at Thule Air
Force Base in Greenland. The B-52, from Plattsburgh Air Force Base in New York, crashed after a fire broke out in the navigator's compartment. The
pilot was en route to Thule AFB to attempt an emergency landing. Upon impact with the ground, the plane burst into flames, igniting the high explosive
outer coverings of at least one of the bombs. The explosive then detonated, scattering plutonium and other radioactive materials over an area about
300 yards on either side of the plane's path, much of it in "cigarette box-sized" pieces.
September 19, 1980, Damascus, Arkansas
Fuel vapors from a Titan II intercontinental ballistic missile (ICBM) exploded in the missile's silo, blowing off the 740-ton silo door of reinforced
concrete and steel and catapulting the missile's nuclear warhead 600 feet.
So while principle might be very simple its implementation is anything else.
Also patterns of Jupiter's atmosphere change continuously because of differential rotation/tornado strength winds so that "targets" in different
latitudes doesn't even move at same speed. (winds blow even to different directions)
With 28 day delay position of something in equator would have been entirely different compared to GRS.
Here's nice animations showing how fast patterns/their position change especially in equator.
(Jupiter's day ~ 0.41 earth's day)
And there's also error in that page, name is Hoaxland!
Everything claimed by him must be taken with bucket of monomethylhydrazine and nitrogen tetroxide.
He kindly even debunks his own claim...
At this ultra-slow “terminal velocity,” it takes the Galileo plutonium-238 capsules on the order of 700 hours – a month! to fall to a depth
Now let's remember probe dropped to Jupiter by Galileo. It worked 61 minutes inside atmosphere before signal disappeared... in that time it detected
faster than expected rise of temperature. Estimates are that one hour forward from that probe started to melt and ten hours after hitting atmosphere
even titanium parts had been vaporized by increasing temperature.
Oh and thinking that dinky small nuke would cause fusion when thousands gigaton explosion caused by comet's impact doesn't ignite it is kinda