Cool :)

- Nice idea driving around a spherical surface (having to explore to see things over the horizon / on the other side of the moon)!
- Nice music
- Game design suggestion: I found that after a while, finding the next rocket piece or fuel station felt pretty random and down to luck, because I had no information to help me. Maybe you could add 2 numbers at the top of the screen that show the distance to the closest rocket piece, and the closest fuel station. This would give the player more information to decide where to go, but leave them to figure things out themselves by exploring and experimenting a little. It would also create a natural progression from the closest fuel stations and rocket pieces, to those that are further away, later.
- It would've been cool to clearly show which fuel stations have been used or not (big green lights on the active ones, red lights on the used one, etc)

Overall though - good stuff :)