How far away is Barnard's star? What's a blue giant in Earth's near vicinity? How about a star that might have planets? Or a rotating map that allows me to plot my heroine's round-trip relativistic starship journey?
Ask no further - go to Solstation.com. I think these guys are space-exploration activists. I say go to it. Until we get an antimatter drive working, they will be saints to us sci-fi authors.