I thought it was because as they reach our level of civilisation, they built giant particle accelerators for research and turned their planets into black holes.
I think it would be hilarious if an alien civilization flew into our solar system only to find a black hole -- complete with moon -- orbiting the sun between Venus and Mars! No doubt they'll know exactly what happened...
hahaha, you should work for Hollywood!
Somebody get me Pauly Shore on the phone!
The mission will focus on Jupiter's structure and evolution, and not on Europa or the other icy moons that may hide oceans under their surfaces - a disappointment if you ask me.
... especially since we could be using those icy moons as giant particle detectors (PDF) for neutrinos and other cosmic rays.
UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things. -- Doug Gwyn