On Sept. 16, 2013 Expedition 26 astronaut Cady Coleman spoke with actress Sandra Bullock to discuss Bullock’s character in the movie. While developing her role, Bullock gave Coleman a call while she was aboard the space station. At the time, the actress asked Coleman to elaborate on what it’s like living and moving about in microgravity. “I told her that I had long hair, and if you pulled a hair out and pushed it against something, you could move yourself across the space station,” said Coleman. “That’s how little force it takes."