This one I believe:
https://en.m.wikipedia.org/wiki/Ascension_(miniseries)
You have to rate a show like this relatively if you are watching on a network filled with crap. It was not bad for a SyFy show!
> Could be a good murder mystery, if it were not ruined by the whole fake ship idea.
Not quite what you are thinking, but you may enjoy Aniara:
I think it was from SyFy. It was so bad it could only be SyFy.
Could be a good murder mystery, if it were not ruined by the whole fake ship idea.