This is just stunning, beautiful color scheme and freckles! Her hair...my word, the detail and flow of it is just gorgeous, like she is floating away with the gravity of it all. This is by far one of my favorites, you did splendid!
I have been studying the universe and quantum foam and dark matter and such in classes. I just have to say I really really really really love this drawing!! I'm really interested in the universe too!! <33