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 illuminated by a spotlight, the disco ball reflects light in various directions, creating a vibrant 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 versions used in nightclubs and smaller ones for home use. The iconic design continues to be a symbol of celebration and fun.