The show is based on a novel by Robert J Sawyer but from an online synopsis, it does not appear to follow the book so it looks like Brennon Braga and the rest of the writers are really winging it.
With an ensemble cast of this size this show could easily run for 5 or 6 seasons.
What will really matter will be keeping the characters as real as possible and keeping the science, even everso slightly, within the realm of possibility. If it really gets too far out in left field, this series will die a slow and painful death just like "Lost"
I really hope the writers don't screw it up by trying to milk the gig for just another paycheck