A solid game overall. Visuals are very well done and music is relaxing, which fits the gameplay.
The idea of creating entire solar systems with your truck is very neat. My only gripe was that it took me a while to notice the instructions aren't dead set, so I can complete a planet that requires 30/20/50 with 29/21/50 for example. I kept trying to match the proportions but couldn't get it right.
Congratulations on a very well done game.