Zero G
Last March, the Japanese astronaut Koichi Wakata joined the ISS, staying until few days ago. Besides his scientific task, he was doing a list of experiments for the people (selected in a contest), the list includes: 1. Calisthenics: Is it possible to follow an audio-guided workout program in zero gravity? 2. Backflips: On Earth, backflips take a lot of practice and leg strength. How about in zero gravity? 3. Volleying (soccer): Crumple a piece of paper into a ball and try kicking it around. How does the ball behave in zero gravity? Can you volley it? 4. Push-ups: In space, can you do push-ups while facing the ceiling or walls? 5. Cartwheels: In zero gravity, can you rotate yourself continuously like a windmill? 6. Swimming: Try to swim through the air as if you were in water. Can you move forward by swimming? If not, why not? 7. Spin like an ice skater: On Earth, ice skaters can increase their rotation speed by pulling their arms closer in to the body while they spin. Does the same th...