I saw this comic book in a shop in the mid 80s. The book could have been older though. Don't remember the title or publisher.
It was about the journey of a bunch of astronauts/scientists/kids on this space ship that was more like a moon or large ball satellite with its own atmosphere under a dome/shield and houses and structures on the surface of the ship/moon/satellite.
I don't remember the name of the ship but something like "Moon 2" or something similar seems to ring familiar.
It seemed to be the first issue of the series and it was about them all getting "on board" and taking off (= flying away from earth's orbit)
There was some mystery plot in there somewhere. don't remember what about. The story ended with some cliff-hanger so I assume there were more issues.
Not sure if that rings any bells for anyone.