There is a video from the Space Station here: At around the 1 minute mark, you see the stability of the CD player when the CD inside is spinning. Don Pettit goes on to tape additional CD players together at 90 degrees to the original to make it stable in 2 directions, but my questions is are a little different. 1. He occasional gives a small tap to the spinning CD player causing it to wobble a bit. If he hit it a little harder, would it flip? 2. If he taped 2 CD players together, one on top of the other rather then at 90 degrees, he has 3 ways of doing it. He can have both CD's spinning to the right, both CD's spinning to the left, or 1 CD spinning right and 1 CD spinning left. In the case of 1 CD spinning right and 1 CD spinning left, would this act as the spin0 state of a spin1 particle and required no energy to "flip"? Ie. the 2 CD's taped together would not act like a gyroscope but more like a CD that is not even turning? This question would be very easy to answer with access to the space station, but unfortunately I have no access and not enough money to buy a trip up there although I would love to go with some CD players and a bit of duct tape to try it myself.