Sky lanterns are airborne paper latern that are best known as a tradition found in some Asian cultures. They are traditionally constructed from oiled rice paper on a bamboo frame, and contain a small candle or fuel cell composed of a waxy material. It applies the same principle with the hot air balloon. When lit, the flame heats the air inside the lantern, thus lowering its density causing the lantern to rise into the air. The sky lantern is only airborne for as long as the flame stays alight, after which the lantern sinks back to the ground.
