Voyager just got its first great space business idea for once it has a space station.Leading the team of companies planning to build a privately owned Starlab space station to replace the International Space Station in 2030, Voyager Technologies (VOYG +8.84%) arguably has the best chance of success and of beating out rival space companies Vast, Axiom Space, and Blue Origin as well. But this does leave one question open:Once Voyager builds its space station in orbit... what does it plan to do up there?Now we ...