Balloon (aeronautics) they are popular for balloonist sport activity. The first balloon which carried passengers used hot air to obtain buoyancy and was built by the brothers Josef and Etienne Montgolfier in Annonay, France in 1783: the first passenger flight was 19 September 1783, carrying a sheep, a duck, and a rooster. The first tethered manned balloon flight was by a larger Montgolfier balloon, probably on 15 October 1783. The first free balloon flight was by the same Montgolfier balloon on 21 November 1783. When heated, air expands, so a given volume of space contains less air. This makes it lighter and,
2012 Ljubljana Marshes hot air balloon crash 2012 Ljubljana Marshes hot air balloon crash The 2012 Ljubljana hot air balloon crash occurred on the Ljubljana Marshes in central Slovenia on 23 August 2012, killing six people while 26 others survived. A hot air balloon carrying 32 passengers, mostly tourists, crashed and caught fire during a thunderstorm on the Ljubljana Marshes, in the Municipality of Ig, between Lavrica, Črna Vas and Ig, next to Ig Street (), two hundred meters from the turn for Matena, seven kilometres south of Ljubljana. A sudden weather change caused the pilot to try to land immediately. However, the emergency landing was thwarted