Astrobiology is concerned with the logistics (human hibernation, Generational starships ) of putting our bodies into space (which, frankly, makes the whole business sound like not so much fun compared to my warp n' blasters ideal). Also some neat stuff on "exobio".
First, you will need to construct a stable environment and community for your travellers - they'll be on board for probably at least 50 years. That means they'll need a large amount of space for housing, recreational activities, research (they'll need to keep busy) and administration.