I liked the core concept of this game but I found it a bit too easy to get lost (restricting the playing area might have helped as well as adding a mini-map) being able to send small scans in an aoe would have been nice to help locate the remaining planets too!
I am not sure I fully understood the concept of buying / selling and making the planets happy but the idea is really nice!
With a bit more time and polish this can become a pretty great game!