First Hot Air Balloon Flight
In 1783, the French brothers Joseph-Michel and Jacques-Étienne Montgolfier sent the first hot air balloons aloft, and by the end of the year humans had left the ground in them for the first time. The flights opened a new chapter in human history: for the first time, people could rise above the earth and travel through the air, an ancient dream that had been the stuff of myth and speculation.
The Montgolfiers were the sons of a prosperous paper manufacturer in Annonay, in southeastern France, and worked in the family business. Their interest in flight was part of a broader Enlightenment curiosity about gases and the atmosphere. Scientists such as Henry Cavendish had recently identified hydrogen, and Joseph Priestley and others were studying various "airs." The brothers' own explanation of why their device rose was mistaken. They believed the smoke from burning straw and wool produced a special lifting gas, which they sometimes called "Montgolfier gas." In fact, the heated air inside the bag was simply less dense than the cooler air around it.
Their first public demonstration took place at Annonay in early June 1783, when an unmanned balloon of cloth lined with paper rose to a considerable height and traveled some distance before landing. News spread quickly to Paris, where the Academy of Sciences took notice. In September, a balloon carrying a sheep, a duck, and a rooster flew before the royal court at Versailles, partly to test whether living creatures could survive at altitude. They did, and the animals landed safely.
The decisive step came in November 1783. On 21 November, Jean-François Pilâtre de Rozier and the Marquis d'Arlandes made the first free flight by humans in a Montgolfier balloon, rising from the outskirts of Paris and drifting across the city for about twenty-odd minutes before landing. Earlier tethered ascents had already carried people a short way up. Within days, the physicist Jacques Charles and Nicolas-Louis Robert flew a hydrogen balloon, a rival design that proved more durable and controllable over long distances.
The consequences were swift and far-reaching. Ballooning became a European craze, drawing huge crowds and inspiring art, fashion, and poetry. It also found practical uses: balloons were employed for scientific observation of the upper atmosphere and, in the 1790s, for military reconnaissance by the French revolutionary army. Although balloons could not be steered reliably, they proved that flight was possible and paved the way for later airships and, eventually, powered aircraft. Hot air ballooning survives today as a popular sport and a lasting reminder of the Montgolfiers' ingenuity.