It's a very novel idea. I've not seen gameplay that is centered around orbital trajectories. The closest thing I've come across is probably Geometry Wars 3 or Sonic: Lost World. Great job coming up with that and successfully executing on it.
There is a surprising amount of polish for a jam game here. A clearer feedback cue on bullets hitting the statue would be nice, though. And perhaps if the light source could move a bit over time, that would be nice for the darker sides of the planet, unless that was intended.
The bullet trails were very well done and really sold the orbital component. I like how they result in a gradiated streak and have just a touch of randomness to make them feel less mechanical. I do think that they were the most essential in this game's visual feedback, and they seem to have received dev attention proportional to that. Good call.
If anything was lacking, I suppose the "juice" in the payoff falls a bit short of the rest of the game. If it could convey some gratuity upon hitting statues or clearing a level, that would be great. As it is, it is incredibly polished in most aspects but doesn't feel very rewarding.
In all, a great entry. Though it was just the essential gameplay without further complexity, but each component played its role well. Kept my interest for a little while. Great job!