lebjoot's Journal: Cassini space craft: the way out of this rock

Cassini has many human-like sensor instuments that make it like an algmented human:
http://saturn.jpl.nasa.gov/spacecraft/overview/

I like the radar, that can see montains , rivers, etc.
Exciting stuff.
Imagine that with a capacity of upload human brain, nano factories, and we can conker the galaxy. Although there is still a problem energy. Where do get the necessary energy when distant from a star?