Blog Editor's Note: Thanks again to all of you who have been leaving comments and submitting questions. Dr. Magnus will be orbiting the Earth for quite a while yet, so stay tuned for more special dispatches sent from the ISS. Maybe she'll answer your question soon! In the meantime, we'll continue to bring you questions from last summer's Aerospace Camp kids along with Sandra's answers.

Is it hard to control your body in zero gravity?
-- Brad (Team Atlantis)

MAGNUS: You have to move very slowly, especially at first. It is much easier to start motion than to stop it. I was amazed at how obvious Newton's Laws of Motion were in zero gravity! Once you get used to moving around and adapted to the environment, you get a feel for how much force to input to move and in what direction to input that force.