Neat shooter ! I really like how it's dynamic and the progression feels like well balance. I'm quite found of the theme, as a physicist myself, I wonder where you got the idea, but anyway felt good taking revenge on those nasty particles that made my study a real hell :P
I did not see the balckhole effect though, maybe my browser, I known some shader effects are not well exported some times. Also the dash invicibility seemed not to work for me.
In any case, well done and congrats, it's a really cool game!