Below, you'll see any text that was highlighted with comments from the reviewer.
I was moved by the fact that this poem almost reassures the reader using the idea of a black hole---it's so beyond our comprehension, so vast and careless and unforgiving. You turn it into something calming. I saw it as 'don't worry, the pain will end when the world ends'.
Honestly, I think it's almost perfect the way it is. Additional lines would be unnecessary. I'd like to know what you were thinking of when you wrote this, though!
This might be my favorite poem right next to A Dream Within A Dream by Edgar Allan Poe. Amazing use of language, deep message, just beautiful all around.