This was so enjoyable, finished it in one sitting because it was just that fun! I really love this concept and can easily see it as a fully fleshed game. It seems like you've already had lots of comments on how to improve it, so if you do intend to develop this further, I can't wait :)
This is a really pretty and relaxing game with a nice constellation motif. I liked the puzzles and mechanics, would love to more! I think how the team taught players that you don't always have to pass through an intermediary star too.