Okay interesting entry. Like a bombing run in the a stars photosphere followed by a frantic escape like a mix between lifeforce on the NES and the attack on the death star haha, that last level was really tense, it seemed I moved faster when I was closer to the right of the screen so I was frantically managing my shots and dodging, that was a cool sequence.
The cutscenes were a big standout for me actually, well specifically that first cutscene between the first asteroid level and the stars photosphere, the undulating solar flares and music was really emotive. I did wonder how you did the ones after that and it sounds like you maybe down res'd some stock footage or something?
In terms of feedback, the movement and shooting was pretty slow for me, I wonder if that's a web version or browser thing rather than what its like at full speed, I also didn't quite understand what I needed to do in the 2nd level until I failed so maybe some sort of context, instructions, objectives displayed to the player would be helpful.
Good effort!