> Why would corporations finance interstellar travel anyway? There's no profit in that. If they won't, then nobody will. The most you'll get is a few state-p

> Why would corporations finance interstellar travel anyway? There's no profit in that. If they won't, then nobody will. The most you'll get is a few state-prestige projects which fly around a tiny handful of people at most before they get bored and move on. This is probably the most realistic outcome but it doesn't make for much of a sci-fi story so it's better to take some liberties and assume that commercial exploitation of space flight might somehow be possible. Once you've accepted the possibility of space commerce for the sake of the story, you can pull publicly funded space travel into your story as well if you wish. You could also use war as a justification, but the viability of the sort of interstellar war that involves spaceships of people flying around (rather than the use of long-range weapons of mass extermination) likely suggests the viability of interstellar trade or at least resource exploitation.