A disco ball, also known as a mirror ball, is a spherical object covered in small, reflective mirrors. It is commonly used in dance clubs, parties, and events to create a dazzling light effect. When light shines on the disco ball, it reflects beams in various directions, creating a lively atmosphere. Disco balls became popular in the 1970s during the rise of disco music and dance culture. They are often hung from ceilings and can vary in size, with larger ones producing more dramatic effects. Today, disco balls are still used in various settings, including theater productions and weddings.