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 waxy flammable material.
When lit, the flame heats the air inside the lantern, thus lowering its density and 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, these hot air balloons can be made from 6 feet (2 meters) to over 210 feet (72m)!!! This Giant sky lanterns also carry fireworks (standard at night) and sometimes a massive flag of 6′-30′ (used during the daytime).
Only in 2009 in Rio de Janeiro were 21 people arrested for releasing these balloons, in Brazil, it is against the law to create, release and carry this type of balloon. A lot of UFO sightings can be explained by that.
Brazil’s balloon seasons are June, July, Christmas, and New Year’s Eve. As sky lanterns contain a flame, there is the danger that they can cause a fire when landing on the flammable ground. Or hit an airplane.
Also, Malta and Australia have temporarily banned the Sky Lanterns party products.