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 sparkling atmosphere that enhances the mood of the space. 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 a more dramatic effect. Today, disco balls are still used in various entertainment settings, including weddings and concerts.