This game has a lot of potential if you went further into it.
The failure collisions are really strict where if you orbit a planet that happens to be at the top of the screen you'll fail just for landing on it.
It would be cool to give the player the ability to control the speed at which they boost when out of orbit to catch the near misses in gravity, perhaps with a limited resource that can be recharged over time or collected from items that scroll vertically in the same way the planets do. Having collectibles that increase your score or empower the player would add a lot of risk reward to just planet hopping.
Looking forward to your progress on this game.