A game with a beautiful aesthetic, both musically and visually (gorgeous graphics with a lot of personality).
As for the gameplay, it's clear that it’s a more relaxed game focused on the story rather than the gameplay. I really liked the idea of searching for planets to find the different clues of the story, although unfortunately, I haven’t been able to finish it since the cannon controls are a bit clunky, and the idea of launching blindly makes it difficult to find the last pages. Maybe adding an indicator on the map for the notes you've already found, marking the ones you’ve picked up, would help a bit.
Lastly, I should mention that while the gravity programming is excellent, the only issue I found is that the character often ended up upside down, and the fact that it had so much inertia meant it would almost always get stuck in a cannon, causing me to miss some notes along the way.
Great job, and I encourage you to keep working on it. If you polish those details, it will definitely be an amazing game ^^