[hackuser]

Europa is an extremely tiny target to hit randomly from Earth, probably made smaller by the fact that, in order to hit Europa, the object has to pass near Jupiter without getting pulled into it.

On the other hand, there are billions of years of random attempts, as you said.

[adrianN]

But there is a big lump of mass near Europa that tends to attract projectiles.

[hackuser]

Yeah, that's why I said "probably". I wonder if it's a net gain or loss in the game of 'drop a rock on Europa'. At this point, I'm leaning toward 'gain'.

[kerbalspacepro]

You mean the wormhole with a blackhole on the other side?