Fun concept and great execution. It's super well polished and plays great.
If you wanted to keep building, it would be nice to have power ups such as "double points" or a "5 second shield" to appear on the far ends to encourage risky behavior. Furthermore, it could be nice to see where the meteorites will impact before they come down from the top. Lastly, new levels with new locations plus a new challenge could be nice. For example, an ice area where the ball sides or a field where wind blows in a direction. This could be unlocked by getting a high enough score on the previous stage.
I think this could work really well as a mobile game with tilt controls.
Overall fun game! Good luck with your future game dev!