Paper makers Jacques-Étienne Montgolfier (pronounced “jha-ack ee-tee-yen mon-go-fee-yay”) and his brother Joseph-Michel Montgolfier (pronounced “zho-seef mee-shell mon-go-fee-yay”) created the hot air balloon after noticing that paper in their factory would be lifted by warm currents of air. This discovery lead to the innovation of hot air being confined within a bag which birthed the modern hot air ballon, an overall design which has remained relatively unchanged since its advent in 1783 despite advances in technology. As hot air is filled into a sack, the sack becomes less dense than the air which surrounds it, allowing the sack to rise in its altitude, be it 1 meter or 10,000 meters. The first successful untethered flight with passengers occurred on September 19, 1783. This initial flight was completed by a sheep, duck, and rooster. The first flight with humans occurred just 2 months later, with the hot air balloon raising 3000’ into the air and traveled a distance of 8 kilometers. The Age of Flight was born during this event as it was the first time in human history that a person or group had successfully lifted off the ground and remained in control of their flight path trajectory