NASA astronaut Don Pettit spent over five months on the International Space Station. That's a long time to be stuck in the office. To relax, he did science experiments that interested him--like testing whether raw and hard-boiled eggs spin differently in space (as they do on Earth). Pettit gave us the results of the experiment, but challenged you to explain them. Send your best answer to egg@sciencefriday.com. Correct-answer givers will be in the running for an Ira-autographed pocket protector. Glory to the geeks! Contest over. Here's the answer from Astronaut Pettit.