Thank you!
I quickly realised it was a game that would have a large divide in player ability. Which is fair enough, it's not like Kepler's laws are common knowledge. I didn't have enough time to fully flesh out the tutorial, the theme is incorporated in the later levels where you have to match the orbits of other satellites but that was a bit to difficult to include in the early levels. I hoped you had fun on the levels you did play though!