In 1946 the ducan company moved to luck, Wisconsin, and to town became known as the “Yo-Yo capital of the world.” The company produced 3,600 yo-yos per hour. In 1962, the cuncan company alone sold 45 millon yo-yos in the united states. At times, the yo-yo loses its popularity, but then it comes back----well, like a yo-yo. In 1992, astronaut Jeffrey Hoffman took a yo-yo with him on the space shuttle atlantis.
The term yo-yo has became part of the English language, and it is no longer used just the to describe the toy. It means “to change repeatedly or to constantlt go up and down