I have to say, even after playing the most rated games this gamejam had to offer, this one deserves a spot in the top 10. The loop is obvious, the narrative is super cute, the mechanics are just difficult enough to get good at progressively and to top it all off, it has 3 difficulty levels so players can choose their own experience. The tutorial is text, which for the gamejam should be more than enough. For people who don't have enough patience to read the tutorial, their loss. The polish covered everything I could see and the audio was fantastic, 5 stars across the board.
Another thing which I saw in the comments under was an idea to port it to mobile. In this case, I have a suggestion, since I've played the game almost solely through moving right and rarely remembering that I can actually stop moving and go back to grab a heart, I think this game could easily be played with just forward movement (maybe you could choose a direction or it could be level specific if it contained multiple levels / planets). This way, you can have a thrust button in one corner of the screen and a cloak button in another which would be enough for 2 thumbs on mobile.
Another minor suggestion about the mechanic I loved the most which rewarded risky play, where you barely miss obstacles and gain fuel is, if it already is not implemented that is, to give more fuel on harder difficulties (potentially even gaining a star if you barely miss obstacles 5 times in a row). For extremely competitive people that love to show their skill, this would be a great challenge in my opinion.