Wow, I got a good ending on my first try, what a rare event :D
Frankly, I haven't tried to get the other ending yet, but the fact that there are multiple choices and that you can save you progress is amazing. The game looks polished and I would say it feels cozy in every aspect - visuals / audio / gameplay.
Probably it's not for everyone because of the astronomy background, but personally I'm going to check out information about Jupiter and Ceres - you got me interested in this theme.