Really cool game! I enjoyed the complexity you were able to build in the mechanics without it becoming overly cumbersome or hard to follow! Setting up the trade routes and all was very satisfying as well!
One thing I could suggest is giving the player one extra boost after launching to give a bit more hope or sense of control in a situation where you are unable to reach another planet due to a small mistake or overestimation.
This game feels like one that could polish up nicely over time with some more content to get a nice full release!
Good job!