Fun game.
I really enjoyed zooming around in the ship. You did a good job on the speed effects. Launching the missile attacks on the planet was satisfying too, sound had a lot of oomph to it. Ship homing missile was cool as well.
For improvements, maybe add some dynamic zooming out of the camera based on your ships speed. Also, adding some more feedback for when you hit a ship with your laserbeam would be nice, as it can be quite hard to tell if you hit an enemy sometimes. A healthbar would be good too. Finally, the arrow pointing to the nearest planet could do with being bigger. Took a while for me to notice it.
All in all, an enjoyable experience that needs some extra QoL improvements added. Good job!