I got the feeling that you wouldn't be able to. Notice how Will "backs up" to go from planet to system, then system to galaxy, then galaxy to universe. From what he said when he bought the spaceship, you wouldn't be able to zoom out of the planet to see the system until you had the UFO. It's probably the same thing, you have to get FTL drive to leave your system... Then I don't know... maybe that's all you need, or maybe a better engine to leave your galaxy.
Edit: I guess what I'm saying is I think there's limits of scope. I.E., Cell, you're stuck in that little drop of water in a 2D world, Creature, you're limited to the area around your creature, Tribal, city, civ might be similar, although I think again, their scopes will grow larger, And then space, which (seems odd to me now that I write this) may be split into system (stellar), galaxy, and universe. At this time however, I'm not sure we can really say there are such splits in Space, except for the fact of WW talking about having to get an interstellar drive... The point is, the area available to you depends on your level of advancement, so I don't think you'll be able to tell your UFO to go to stars you don't have the technology to reach.