Skynet becomes self-aware?
The Forbin Project turns out to be real and Colossus is activated?
Something wonderful is going to happen: Jupiter ignites and becomes a second sun?
The scientists at the Hadron Collider open a gateway to another dimension?
We make first contact with the Visitors?
Except for #3 if any of of the above happens we're screwed. If #3 happens we need to stay the hell away from Europa.
:-)
I read that book.
In a subsequent novel, Europa was the home of another nascent group of intelligent creatures that was being protected by another black monolith, just as the apes were in 2001.....................
Guardian isn't going to like that...