Gases near a dying star in the Helix Nebula. This nebula is located in the Aquarius constellation. Each knot of gas is several billion miles across. Credit: C. Robert O'Dell and Kerry P. Handron [Rice University], NASA.
Motion of a Spinning Top
There are many forms and shapes of spinning tops, and they are put into motion in an interesting variety of ways. Some are spun by snap-twisting a center stem with your fingers and releasing. Others are spun using a cord. Regardless of how the tops are spun, they behave in a similar fashion.