Thanks for the answers. Zero-G being a learning by doing skill makes a lot of sense (I'm not sure if spending time in the Neutral Buoyancy Lab or in the Vomit Comet would give you full skill levels). I was mostly curious as some of the pre-gens have levels of Zero-G, not just 0. Chris the Engineer has Zero-G 2 but no Space Suit 0 so rules-wise has not spent any time in space. Whenever I read a new game I use any presented charaters as reference for how chargen (and the game in general) works.
I like what I see so far. The layout is clean and readable, and most of the art pieces look OK to good. Although some of them needed to be reality-checked (the location of the umbilicals on the cover, the guard rails on the gantry on page 69, and the rockets on page 71).