Chinese Sky lanterns are airborne paper lanterns traditionally found in East Asian and Thai cultures. They are constructed from oiled rice paper on a bamboo frame, and contain a small candle or fuel cell composed of a waxy flammable material.
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 floats back to the ground.
But in Brazil and South america this hot air balloons can be made from 6 feet (2 meters) to over 210 feet (72m)!!! This Giant sky lanterns also caring fireworks (common at night) and in some cases a huge flag of 6′-30′ (used during the daytime).
Only in 2009 in Rio de Janeiro 21 people were arrested releasing this balloons, in Brazil it is against the law, create, release and carry this type of balloons. A lot of UFO’s sightings can be explained with that.
In the months of June and July, and Xmas and New Year’s Eve are the balloon season in Brazil. As sky lanterns contain a flame, there is the danger that they can cause a fire when landing on flammable ground. Or hit an airplane. Also Malta and Australia have placed a temporary ban on the Sky Lanterns party products.
Source: Strange Strange Strange